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

### Instruction:
 肖恩买了3罐苏打水，2碗汤和1个三明治。每碗汤的价格与3罐苏打水的总价相同。三明治的价格是汤的3倍。如果苏打水的价格是1美元，那么所有东西一共花了多少钱？


### Response:
 苏打水的价格是3*1=$<<3*1=3>>3
所以汤的价格是2*3=$<<2*3=6>>6
三明治的价格是3*3=$<<3*3=9>>9
所以总价是3+6+9=$<<3+6+9=18>>18