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

### Instruction:
 Tim买了3打鸡蛋。每个鸡蛋的价格是0.50美元。他为鸡蛋支付了多少钱？


### Response:
 他买了3*12=<<3*12=36>>36个鸡蛋
所以他们的价格是36*0.5=<<36*.5=18>>18美元