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

### Instruction:
 在一个教室里，有10个孩子，每个孩子有7本书。他们的老师又带来了8本书到教室里。教室里一共有多少本书？


### Response:
 起初，孩子们有10*7=<<10*7=70>>70本书
加上他们的老师，他们一共有70+8=<<70+8=78>>78本书