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

### Instruction:
 雷吉的父亲给了他48美元。雷吉买了5本书，每本书2美元。雷吉还剩下多少钱？


### Response:
 书的费用是5 × 2 = 10美元。
雷吉还剩下初始的48美元 - 10美元 = 38美元。