When Cui Shaoqing walked over, Qin Tai was settling accounts.

Next to him, there was a ledger with the details he had calculated.

There are many of these breakdowns, including how much you earn in a day, how much it costs, and so on.

And the details of each day have to be summed up, so at the bottom of each page, there are numbers.

However, there are too many details, and it is more cumbersome to add them up, and it is very difficult to calculate these clearly, so Qin Tai crossed out some miscalculations of the numbers at the bottom of each page.

Cui Shaoqing only glanced at it and understood what was going on.

This is similar to calculating the sum of a string of numbers in later generations, if there are no tools, calculate these numbers, either mental arithmetic, or after calculating several sets of numbers, write down the sum, and then calculate the rest, and finally calculate the sum of several times to get the sum of a string of numbers.

However, when using these methods, there will inevitably be omissions or negligence, so it is easy to make mistakes.

But if you borrow a tool, you don't have to worry about it.

Tools can make arithmetic faster and more accurate.

Cui Shaoqing thought about it and felt that he needed to help Qin Tai.

"Shopkeeper Qin, how many ledgers are still not counted?"

Cui Shaoqing spoke, and Qin Tai was suddenly stunned.

"Uncle, when did you come?"

"I've been here for a while, and I didn't bother you because I was serious."

Qin Tai smiled lightly and said: "The accounts of the grain shop in the first half of the year, it's time to calculate, it's a bit much, I'm afraid it will take more than ten days to finish, and it will take more than a few days to check after the calculation." ”

Qin Ji grain shop is not a big grain shop, so this account is calculated by Qin Tai, and he did not ask the bookkeeper, otherwise it will definitely shorten some time.

Cui Shaoqing nodded: "Don't be in a hurry to calculate the accounts first, I'll give you a tool tomorrow, after you learn it, you can get all the accounts done in one day." ”

Hearing this, Qin Tai looked incredulous.

"Uncle, don't make trouble."

"Whoever messes with you, you just have to wait."

Qin Tai smiled and didn't say anything more, but after Cui Shaoqing left, he continued to calculate, obviously, he didn't believe what Cui Shaoqing said at all, because he knew very well that if they wanted to finish their accounts in one day, unless they invited ten account owners.

Cui Shaoqing said that what tools can be calculated in one day, how is this possible.

He's still good at settling accounts honestly.

After Cui Shaoqing left the store, he went to the street to buy some things he needed, and then returned to the backyard of the grain store, his residence.

He shut himself up in the house, tinkering with things, and the men in the grain store didn't pay much attention.

Cui Shaoqing didn't do it until the middle of the night before he finally made his arithmetic tools.

It was an abacus, not very beautiful, but it worked.

Cui Shaoqing tried it, and the fight crackled, he nodded very satisfied, and then finally lay down on the bed to rest.

-------------------

Early the next morning, the sky looked a little overcast, and it was obvious that there was going to be an autumn rain.

The wind was blowing in the streets, and the coolness hit people.

When Cui Shaoqing got up, Qin Tai was already settling accounts again.

"Shopkeeper Qin, send your tools."

After Cui Shaoqing came, he handed the abacus to Qin Tai, who picked up the thing and shook it back and forth twice, a chuckle appeared on the corner of his mouth, and then put it on the table.

"Uncle, don't make trouble, I'm busy."

Cui Shaoqing was a little speechless.

However, he soon realized that it was not easy for a new thing to be accepted, unless he could feel the convenience that it brings.

"Shopkeeper Qin doesn't seem to like this thing, so why don't we compare and see who counts faster?"

"Does Uncle use this thing?"

"That's right."

Qin Tai smiled: "Then try it with my uncle, there are two identical ledgers here, let's count one each, and see who can calculate quickly and accurately." ”

Cui Shaoqing nodded, and then the two of them didn't say anything, just forget it.

After Qin Tai picked up the account book, he began to mentally calculate while recording some numbers.

If you use an abacus, you basically don't need to record it, you just need to play it according to the rules of the abacus.

Therefore, Cui Shaoqing basically didn't stop much, his fingers kept moving the abacus, Qin Tai had just counted three or four pages, and Cui Shaoqing had already finished counting the account book with more than thirty pages.

When Qin Tai saw this time, he didn't panic, and said, "Uncle, you are too sloppy, this accounting must not be sloppy, you must calculate it correctly." ”

Cui Shaoqing shrugged his shoulders and said, "Naturally, it's right, the final answer is three hundred and twelve taels and three dollars." ”

When Qin Tai heard this number, he didn't react, he just shook his head, and then continued to calculate, he only believed in the results he calculated.

Cui Shaoqing saw that he didn't believe it, so he could only pout his lips and wait for Qin Tai to finish speaking.

The pedestrians on the street were hurrying, and suddenly there was a thunderclap in the sky, followed by a heavy downpour.

Pedestrians on the streets walked a little faster.

Cui Shaoqing was bored, squatting at the door and looking at the rain outside, looking at the hurried pedestrians on the street.

It's not that he wants to see something, he just thinks that in such a rainy season, looking at such a scenery makes people feel comfortable.

He watched like this, and I don't know how long it was, when suddenly an exclamation came from behind him.

Cui Shaoqing turned his head and saw that Qin Tai's whole person felt a little petrified, his mouth was very large, his eyes were also wide, and he was staring at the ledger motionlessly.

Seeing this, Cui Shaoqing understood what was going on.

"Well, it's the same as my calculations, right?"

Qin Tai glanced up at Cui Shaoqing slightly, and then looked at the account book in disbelief, so after a long time, he picked up the abacus and looked at it carefully.

"Uncle, this ...... Is this thing really so fast? ”

Cui Shaoqing smiled lightly: "I can still lie to you, is there any benefit in lying to you?"

"Not really."

Saying that, Qin Tai had already reacted, and hurriedly trotted to Cui Shaoqing.

"Uncle is really amazing, how to use this abacus, can you teach me? I've learned this, and we'll settle accounts in the future, and it's a lot faster, isn't it? ”

There is such a good thing, there is a problem if you don't learn your brain, and now Qin Tai really wants to learn this.

Cui Shaoqing smiled, he made an abacus, which was originally meant to be taught to Qin Tai.

"This abacus is easy to learn, you just need to memorize the mantra of addition, subtraction, multiplication and division............"