"Use the abacus as a counting tool, the abacus is two upper and lower five beads, the upper one represents 5, and the lower one represents 1;

When using the abacus to calculate, the 'five-liter decimal system' is used, that is, when each gear is full of '5', it is represented by a bead, and when each gear is full of '10', it will be 'advanced to 1' by one gear.

According to this, each gear only needs to use the four beads.

Addition, multiplication and division all have corresponding formulas, such as:

The mantra for addition is:

Plus one: one up, five to four, one to nine into one

Add two: two on two, two down five to three, two to eight into one

Plus three: three on three, three down five to two, three to seven into one

This is fast, and you can pluck the beads in one hand and write with the other, which can greatly improve the efficiency of your accounting. ”

Liu Wan came one by one.

"So easy to use? Can you teach me? ”

The shopkeeper Guan is really humble and shameless to ask.

Sure enough, successful people are humble.

Shopkeeper Guan is unheard of of Liu Wanjiao, but his intuition is that this is a subversive method of reckoning.

Liu Wan smiled: "It's okay to teach you, but this is also my family's ancestral skill, in addition to formulas, the most important thing is to rely on the abacus as a tool."

You can teach you, but you have to give me 100 taels of silver. ”

Liu Wan said unashamedly.

"100 taels of silver? That's too expensive, isn't it? ”

Shopkeeper Guan gasped.

"Guan shopkeeper, let's not talk about the price first, wait for me to make an abacus, and then calculate the accounts on the spot and show you. You see if it's worth the price, if it's worth it, we'll make a deal. ”

After Liu Wan came into contact with the shopkeeper Guan, she knew that he was a man of his word, although 100 taels of silver was a lot for ordinary people, but for the shopkeeper Guan, it was not a problem at all.

"Yes."

When the shopkeeper heard this, he was also interested.

Accounting is indeed his biggest headache, but he can't count it, he doesn't know how much he makes and how much he loses in the store, and he can't calculate the operating costs.

Therefore, settling accounts is a headache for people who do big business.

If Liu Wan's new algorithm is useful, the pain of accounting will be much less.

"Then wait for your abacus to come out, it looks like it's worth looking forward to.

By the way, what did you just say you brought for me?

My stomach is a little bad, I'm afraid of cold and hard food, so it's best to heat it up. ”

Shopkeeper Guan and Liu Wan also felt unexpectedly relaxed when they spoke.

She was not as timid as an ordinary peasant woman, and she was also very intelligent, she understood everything, and it was not at all difficult to talk to her.

"It's chicken feet, you let people heat it up and try the taste."

Liu Wan took out the jar of chicken feet placed in the bamboo reeds.

Shopkeeper Guan couldn't help but smile and said, "Isn't this the chicken feet you took from my kitchen yesterday?" How? It turned out to be a dish? Can you eat it? ”

"Why don't you try it?" Liu Wan said confidently.

"Okay."

The shopkeeper called the chef over and asked the chef to heat up the dish.

When the chicken feet were served again after they were hot, a different fragrance overflowed in the account room, stimulating the taste buds of the shopkeeper, and he couldn't help but swallow his saliva.

After hesitating for a moment, with the courage to be the first in the world, the shopkeeper Guan took a chicken claw with chopsticks and put it in his mouth.

Guan Shopkeeper has opened a restaurant for more than ten years, and he is a gourmand himself, and he can accurately judge the taste of food and give his own unique evaluation.

"Well, yes, flavorful, chewy, and a great accompaniment to the snack."

Guan shopkeeper had just finished nibbling on a chicken claw, and felt that he was still unsatisfied, so he took another piece.

Liu Wan has full confidence in the braised chicken feet she made, and she is not afraid that the shopkeeper will taste the recipe to pit her.

No one can do it better than her, who has the opportunity to practice hundreds of times in the space of the system, consume countless raw materials, and finally get the most perfect recipe like her.

"Not bad, right?" Liu Wan said that she had received a prompt from the system and received two survival points for the transformation of food praise, which showed that Shopkeeper Liu was very sure of the braised chicken feet.

Guan shopkeeper felt a little unable to stop eating.

As the big shopkeeper of Wangjiang Tower, he assessed the value of this braised dish at a glance.

If the guests have a drink, they need a dish.

But generally everyone eats the staple food before and after drinking, and if you serve hard dishes, your stomach will be too strong.

And the chicken feet have chewy heads, a little meat gnaws and gnaws, the more you eat, the more you taste, it is a delicacy of wine.

"Do you sell the recipe for this dish?" Guan shopkeeper asked, and said seriously, "I will also give you 30 taels of silver." ”

"Not for sale." Liu Wan shook her head.

Wang Xiao was a little anxious on the side.

How good was the recipe sold?

The raw materials themselves are insufficient, and when will they earn 30 taels of silver by selling their own marinade?

How did Wang Xiao know that Liu Wan needed more survival in addition to silver.

The marinade can be sold to different groups of people for many years, and she can receive a large number of survival points.

If Fang Zi is sold to the shopkeeper Guan, he will definitely restrict her from buying and selling on her own, and then she will have no point of survival.

But Liu Wan can consider that when the survival point is almost harvested, she will sell it to the shopkeeper Guan, of course she won't say it now.

"Three more taels?" The shopkeeper allowed it to benefit.

33 taels of silver?

Wang Xiao's eyes lit up.

If you can sell it for 33 taels of silver, plus the original 30 taels of silver, you will have a total of 66 taels of silver.

In this way, the cost of the two younger brothers' family affairs has been settled.

Unexpectedly, Liu Wan categorically refused and said, "I only supply to you, not to sell." Except for retail sales in the market, I will not sell to a second restaurant. ”

"Okay, but if you want to supply, as you promised, you can only supply Jianglou. I don't care about you in retail. ”

Don't look at Sven when the shopkeeper closes, but in fact, he is very decisive.

"Deal!" Liu Wan nodded with satisfaction, "How many braised chicken feet do you need every day?" ”

"Send me 10 catties a day, and if the sales are good, increase the supply. How much do you want to count a pound? ”

Guan shopkeeper asked.

Wangjianglou has a lot of specialties, and naturally it is impossible to only sell chicken feet.

And not every guest who drinks will order this dish, it varies from person to person, and it depends on whether everyone can get used to it.

"5 cents a pound." Liu Wan will not be polite.

10 catties is 50 yuan, and a month is 1,500 yuan, one or two halves of silver.

The shopkeeper nodded and said yes.

The deal is settled.

Wang Xiao was on the side, and his little heart was beating "plopping" when he heard it.

The mother and relatives negotiated a big deal without panic, 50 yuan a day, and a half of silver a month?

Wang Xiao never expected that his mother was so good at trading, so she earned 20 taels of silver from Guan Zhangzhuo, and now she has to earn one or two halves of silver from him every month, which is 18 taels of silver a year.

Just for the Jianglou Restaurant, their family's livelihood doesn't have to worry.

"By the way, Guan Zhangshi, I also have an additional condition." Liu Wan hurriedly said at this time.

"On what terms?"

"The chicken feet in your restaurant will be supplied to me." Liu Wan said.

Wangjiang Tower is so big, it kills a lot every day, and the raw materials should be the most abundant here.

"This is not a problem, the supply of chicken feet here is also relatively stable, I usually make dishes, make soup, kill hundreds of chickens every day, and if there is a wedding banquet, the number is more.

But there is also a charge for chicken feet, and a pound of chicken feet is sold for a penny. ”

Close the shopkeeper hehehe, the shrewdness of the businessman.