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

### Instruction:
Tom decides to take 10 dance lessons that cost $10 each, but he gets two of them for free. How much does he pay?

### Response:
 ทอมจ่าย 10 เหรียญสำหรับ 8 ครั้ง
เขาจ่าย 10 x 8 = <<10*8=80>>80 เหรียญ