For example, the buying price of USD/RMB exchange rate is 683.2 1 selling price is 685.24.
Then the exchange rate of USD against RMB is 683.21; The exchange rate of RMB against the US dollar is 685.24.
The calculation is based on 100 USD. The understanding is as follows: You can change 100 USD into 683.25438+0 yuan RMB at the bank and 100 USD into 685.24 RMB at the bank. Understand?
Because you study politics, you should speak colloquially as much as possible according to your requirements, and don't use professional mistakes. I hope you can understand. You can leave a message online if you have any questions.