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

### Instruction:
The PTA had saved $400 set aside after a fundraising event. They spent a fourth of the money on school supplies. Then they spent half of what was left on food for the faculty. How much money did they have left?

### Response:
 พวกเขาใช้เงินไป $400 / 4 = $<<400/4=100>>100 สำหรับอุปกรณ์การเรียนการสอน
พวกเขาใช้เงินไป $300 / 2 = $<<300/2=150>>150 สำหรับอาหารครู
พวกเขาเหลือ $300 - $150 = $<<300-150=150>>150