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Buy groceries after work today, when paying, it shows 15.0 yuan. Out of mathematical inertia, I don't think it's quite right. I bought two dishes in total, one for $11.32 and the other for $3.61

author:BWanger software developer

Buy groceries after work today, when paying, it shows 15.0 yuan. Out of mathematical inertia, I don't think it's quite right. I bought a total of two kinds of dishes, one 11.32 yuan, the other 3.61 yuan, no matter how to calculate, the last place is not zero, how can there be a whole 15.0 yuan?.

Out of the vegetable market, I talked to my wife, and she said that it is normal to round up now.

I think this is still inappropriate. In the past, buying things, using paper money, finding change trouble, many times a few cents were erased. Now it is different, WeChat, Alipay and other electronic payments, even if 0.1 points, will be accurate, so why take the whole erase?

If 200 million people across the country go to shopping malls every day, payment software such as WeChat and Alipay may get an extra large amount of ill-gotten wealth every day. Based on the average loss of 7 cents per person, the excess money collected by WeChat and Alipay every day is calculated as follows:

200 million * 0.07 = 200000000 * 0.07 = 14000000

= Fourteen million dollars

That is to say, the people of the whole country have to sponsor at least 14 million yuan of these payment software companies or sellers every day, and pay about 5.1 billion yuan more per year according to 365 days, is it a small amount?

No wonder many companies are scrambling to engage in payment software, which is equivalent to a million profits or even no profits, who wants to easily miss it?

Some seemingly normal things actually imply a big secret.

Buy groceries after work today, when paying, it shows 15.0 yuan. Out of mathematical inertia, I don't think it's quite right. I bought two dishes in total, one for $11.32 and the other for $3.61
Buy groceries after work today, when paying, it shows 15.0 yuan. Out of mathematical inertia, I don't think it's quite right. I bought two dishes in total, one for $11.32 and the other for $3.61
Buy groceries after work today, when paying, it shows 15.0 yuan. Out of mathematical inertia, I don't think it's quite right. I bought two dishes in total, one for $11.32 and the other for $3.61
Buy groceries after work today, when paying, it shows 15.0 yuan. Out of mathematical inertia, I don't think it's quite right. I bought two dishes in total, one for $11.32 and the other for $3.61

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