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

### Instruction:
In a classroom, 10 children have 7 books each. Their teacher brings another 8 books to the classroom. How many books are in the classroom altogether?

### Response:
 ตอนแรกเด็กมีหนังสือ 10*7=<<10*7=70>>70 เล่ม
พร้อมครูพวกเขามีหนังสือ 70+8=<<70+8=78>>78 เล่ม