| 找零錢（找錢）
|
give back the difference (余額) between what is paid and what is charged in a business transaction |
| 余額 |
the remainder (what is returned in the transaction) |
|
| 把Ａ換成Ｂ |
exchange one denomination of money for another |
| 把整錢換成零錢 |
break a larger denominated piece of money into several smaller denominated pieces |