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

### Instruction:
John uses the bathroom every 50 minutes.  How many times does he use the bathroom during a 2.5-hour movie?

### Response:
 หนังนี้มีระยะเวลา 2.5 x 60 = <<2.5*60=150>>150 นาที
ดังนั้นเขาใช้ห้องน้ำ 150/50 = <<150/50=3>>3 ครั้ง