Chapter 302 Arabic Numerals

"How does the girl calculate?" Shopkeeper Fu was very curious.

Everyone also looked over.

Tang Xi smiled, "I'll tell you later."

She looked at Wang Yuanwai and said, "Can I pay for this money?"

"Compensation, this compensation!" Wang Yuanwai looked admiring, hurriedly untied his purse, took out a stack of bank notes and presented it respectfully.

Tang Xi took the banknotes and counted them, and saw that there were quite a few, and there was an extra 300 taels, and he curled his lips in satisfaction.

"uncle."

Tang Xi handed the bank note to Mo Yang, and after Mo Yang took it, he handed it to Mo Xu.

Mo Xu hurriedly kept the bank notes properly.

He was very happy to take so much from Wang Yuanwai for nothing at once.

"Is there anything else for Mr. Wang?" Seeing that the person was still there, Tang Xi couldn't help frowning slightly.

"Oh, Wang is leaving now."

He was about to step out, but he heard Xie Cheng say in a low voice: "Remember, stay away from the Mo family in the future, otherwise, I will make you Wang Yuanwai into a wasteland, understand?"

Member Wang was horrified, nodded repeatedly and said: "Wang has remembered!"

After all, he went out and thoughtfully closed the door of the private room.

"Girl, you haven't said yet, how did you calculate such a large amount in such a short period of time?" Shopkeeper Fu was curious.

Not to mention him, even Xie Cheng, Mo Yang, Mo Xu and others were very curious.

She raised her eyebrows slightly, "Haven't you memorized the multiplication table?"

She remembered that it was more than 2000 years old, there was no way they didn't know about it.

Shopkeeper Fu said: "We know the formula of multiplication, but how can we calculate it as fast as you?"

"That's the way to calculate." Tang Xi blinked, "For example, just now, ten taels a day, based on 30 days a month, that's 300 taels a month, half a year is six months, six 300 taels, then That's 800 taels."

Crowd: ...

It sounds really simple, but how did she add such a large amount?

"300 taels a month is fine, the amount is relatively small, but 800 taels, you can get the result without abacus, how did you do it?" Shopkeeper Fu looked confused.

He felt that it wasn't that there was something wrong with his question, but that the girl didn't seem to know what he was asking.

They all know three 68, but how many zeros are added after the eighteen, how does she know?
"Oh, you mean, it's about the amount." Tang Xi nodded suddenly, "Actually, it's very simple. After multiplying two numbers, just add the zero behind them? For example, Ten multiplied by thirty, one multiplied by three equals three, and the zeros behind them are added, ten with a zero, and three with a zero, isn't that three hundred?"

"Oh!" Shopkeeper Fu suddenly realized, "It turns out that it can still be calculated like this!"

Tang Xi smiled and said, "I've always calculated like this."

Mo Xu said: "That one thousand and ten multiplied by three, then how to add the zero?"

"One thousand and ten multiplied by three, that is one thousand and one zero multiplied by three, which is equal to three thousand three zero, that is three thousand and thirty."

"What kind of algorithm is [-], [-]?"

Her calculation made everyone a little confused.

Only then did Tang Xi turn the corner. There is no such thing as one zero one zero, three zero three zero in ancient times, she smiled, "I learned it from my master, who gave me an article called "Arabic Numerals" That's the numbering method I used for my calculations."

"Arabic numerals?" Xie Cheng said with great interest after hearing the words, "What kind of numerals are those?"

(End of this chapter)

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