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

### Instruction:
 托德有20美元。他买了4个价格为每个2美元的糖果棒。托德还剩下多少美元？


### Response:
 糖果棒的价格是4*2= <<4*2=8>>8美元。
托德还剩下20-8= <<20-8=12>>12美元。