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

### Instruction:
 马克订购了100个鸡块。一个装有20个鸡块的盒子售价为4美元。他为鸡块支付了多少钱？


### Response:
 他订购了100/20=<<100/20=5>>5个盒子。
所以他在鸡块上花了5*4=$<<5*4=20>>20。