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

### Instruction:
There are 320 ducks in a pond.  On the first night 1/4 of them get eaten by a fox.  On the second night 1/6 of the remaining ducks fly away, and on the third night 30 percent are stolen.  How many ducks remain after the three nights?

### Response:
 คืนแรก: 320(1/4)=80
320-80=<<320-80=240>>240
คืนที่สอง: 240(1/6)=40
240-40=<<240-40=200>>200
คืนที่สาม: 200(.30)=60
200-60=<<200-60=140>>140 เป็ดเหลืออยู่