Below is an instruction that describes a task. Write a response that appropriately completes the request in Chinese. Please answer in Chinese.

### Instruction:
 约翰买了3件衬衫。它们每件卖20美元。他还必须支付10%的税。他总共支付了多少钱？


### Response:
 衬衫在税前的价格是$20*3=$<<20*3=60>>60。
税费是$60*.1=$<<60*.1=6>>6。
所以总共支付了$60+$6=$<<60+6=66>>66。