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

### Instruction:
Trent caught 180 tadpoles then let 75% of them go. How many did he keep?

### Response:
 เขาปล่อยกบ 180 * 0.75 = <<180*0.75=135>>135 ตัว
เขาเก็บกบไว้ 180 - 135 = <<180-135=45>>45 ตัว