Hello, I am very upset. I want to open a shop to do some small business, but I can't settle accounts. It's a headache! I want to ask an expert to teach me to study in the fastest way. Thank you.
You write the price of a commodity on the corresponding commodity, and guests only need to look at the price of the commodity when checking out; If the guests buy a lot of things, you can buy a calculator to settle the bill (calculators are not expensive either, they are available for a few dollars or more, depending on which one you choose). I wish you a smooth career and rich financial resources!