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

### Instruction:
A group of parents get together and decide to hire a private school teacher to quit his job and teach their children.  His former job paid 45,000 per year and they offered him a 20% raise.  If there are 9 kids how much does each parent have to pay?

### Response:
 พวกเขาเพิ่มเงินเดือนให้เขา 45,000 * 0.2 = 9,000
ดังนั้นเงินเดือนใหม่ของเขาคือ 45,000 + 9,000 = 54,000 ต่อปี
ดังนั้นแต่ละผู้ปกครองต้องจ่ายเขา 54,000 / 9 = 6,000 ต่อปี