"How much is the processing fee?" Joel didn't respond directly to the goblin's question.

"You first need to buy a certain weight of alloy, but of course we can do it all......"

"The processing fee depends on the amount of silver you exchange, and if the amount is huge, we at Gringotts also have certain preferential measures." The fairy rolled his eyes, "If it's more than 100 kilograms, we will only charge 17% of the total value of the last Xike." ”

17%？ That's not a low price.

Joel frowned slightly, this action was understood by the old goblin as dissatisfaction with the high processing costs.

"Sir, the processing fee is negotiable," the goblin was anxious, he didn't want to let go of such a big order, he leaned over, "I can ask the manager for a lower price." ”

Joel acquiesced, and the goblin led them to the reception room before heading upstairs to the office.

Ten minutes later, the elf opened the door breathlessly, "15%, that's our bottom line." ”

"No problem." Joel readily agreed.

"Do you want to observe the forge?" The elf lowered his stance, "We have the third largest forge in the entire wizarding world underground. ”

Joel thought for a moment and rejected the goblin's proposal, "This is 258 kilograms of silver, and after making it into silver Xike, you can help me exchange it for gold Galleons, so that I can carry it easily." ”

He removed all the silver from his pocket-sized pouch, a weight of metal that had to be carried by a levitation charm.

The moment the fairy saw the silver, his eyes lit up, shining brighter than the silver.

"That's right," the goblin pulled out the abacus he was carrying with him and began to calculate, "a silver coin is 6 percent silver, 4 percent other metals, and 258 kilograms of silver require 172 kilograms of alloy. ”

"And a silver coin contains a total of 1.2 grams of silver, and 258 kilograms of silver is equivalent to 215,000 sico, which is 12,647 Galleons." The fairy abacus is playing fast.

"Remove 172 kilograms of money and 15 per cent of the processing costs...... There are 9700 Galleons left. ”

"May I take the liberty of asking, how much gold is in your gold galleons?" Joel asked casually, took out his wand in his hand, and quietly pointed at the goblin who was busy counting with his head down.

The goblin looked confused, hesitated for a moment and replied in a vain voice, "0.6 grams." ”

Joel nodded, removing his wand.

The elf's eyes suddenly became clear, and he shook his head and put away his abacus.

He snapped his fingers slightly, and the silver on the floor followed him out of the reception room.

The elves didn't procrastinate, and paid happily after the appraiser determined that the silver's purity and weight were correct.

Sergei looked at the brown cloth bag full of gold coins, people were still confused, when they left England half a month ago, they had 2,800 Galleons in their hands, and now it has become 9,700 Galleons?

"Let's go," Joel buttoned up his coat, "let's go to Tumbledown Alley first, there's still work to be done." ”

Seeing that Sergei didn't speak, Joel gently pushed him with his elbow, "What's wrong?" Just this little money scares you stupid? ”

Sergei swallowed, put the money bag in his pocket pouch, and followed Joel out of the Gringotts gate.

After spending 60 Galleons on a bottle of polyjuice potion at Borgin Burke's store, Joel looked at the shopkeeper's originally gloomy face and felt a little unhappy.

Sixty Galleons is not cheap, not to mention the fact that the polyjuice decoction has become an integral part of Joel's actions in the future, and he decides to make his own potion.

Money, if you can save it, you can save it, and spend it when you should spend it.

That being said, he turned around and spent another 50 Galleons on a whole bunch of other things in the store, and for 150 Galleons a small suitcase with a Traceless Stretching Charm, which was much larger than a pocket bag.

Packing everything into a pocket-sized bag, Joel ran back to the Leaky Cauldron with Sergey.

As soon as I ran upstairs and closed the door, the effect of the compound decoction disappeared cleanly.

Joel took off his much larger coat and sat cross-legged on the bed in a short-sleeved T-shirt and began to organize his tools.

"What are you doing here?" Sergei watched in a daze as Joel assembled the dissolving device.

"Dissolve the gold in the Golden Galleon and sell it to the pawn shop." Joel didn't look up, concentrating on his own business.

"You're going to do it again?"

"Or else?" Joel tilted his head to look at him, "This kind of fat sheep must be caught, we won't do more, and if we go back and forth twice, the gold galleons in our hands will be enough." ”

In fact, Joel had more than once had greed in his heart after successfully reselling gold and silver, and everything he did could be summed up very simply: take advantage of the different gold-silver ratios between the wizarding world and the Muggle world to make a fuss and arbitrage trade.

In the wizarding world, the ratio of gold to silver is fixed (1 Galleon to 17 Sico, and the ratio of gold to silver content alone is 1:34), while in the Muggle world, the exchange rate of gold and silver is floating, that is, as long as the exchange ratio of gold and silver in the real world is greater than 1:(34 + processing fee and alloy fee per gram of silver), you can make a profit from it.

Buy silver from the Muggle world, then go to Gringotts to craft it into Silver Sico, then exchange it for gold Galleons, and filter out the gold from the gold Galleons and sell it to the Muggle world...... And so on and so forth.

Joel, who majored in business administration in his previous life, did not have much to do with finance, and if he was a hedge fund player who came to the wizarding world, he would be much more proficient in operation than him.

But he wasn't going to do that now, if Gringotts was hollowed out, the whole wizarding world would be in turmoil, and the people at Gringotts probably wouldn't allow a lot of gold to flow out, the elves were always very shrewd when it came to money, and if they found out that a lot of gold was going to the Muggle world, they would take action accordingly.

Now Joel hasn't fully grown up, he just wants to make "some" money sneaking around as the rules allow.

Thanks to the fact that many aristocratic ladies and ladies like to carry gold jewelry, the Bogin Burke store sells a dissolving evaporation device for melting gold and solemnly reshaping it, and in one night's work, 9440 Galleons are all dissolved, and the gold inside becomes a large gold lump.

The two of them had lost more than one hair on the bus before, and it was estimated that they would be bald in less than two years, so they drank the compound decoction and pretended to be yesterday, returned to the pawnshop to meet the manager, and sold a large lump of gold.

Still not asking for dollars but spot silver, they came to Gringotts again.

It was the old goblin with glasses who received them before, and in the face of the same demand as yesterday, the old goblin didn't ask anything more, and exchanged all the hundreds of catties of silver they brought for gold gallons.

Going through another cycle, Joel and Sergey looked at the suitcase full of gold gallons and looked at each other without saying a word.