Doing business: how to effectively improve the ability of oral calculation and let the change be natural?

Hello, there are several questions you need to clarify: 1. About calculation: Be calm and don't be nervous when looking for money. There's nothing embarrassing about opening a shop to make money. There is no need to be nervous. Moreover, if you are not sure about your computing ability, I suggest you use a calculator to calculate. Don't be afraid of embarrassment. If the calculation is wrong, it is not a personal embarrassment, which may make customers dissatisfied and lose more business! As for improving your computing ability, personally, with the passage of time, your computing ability will definitely be improved in practice! 2. About the deposit of money: If you put it in your pocket, it is inconvenient and unsafe. I suggest you put the money in the drawer and remember to lock it after you tidy it up.