First night:320(1/4)=80

320-80=<<320-80=240>>240

Second night:240(1/6)=40

240-40=<<240-40=200>>200

Third night:200(.30)=60

200-60=<<200-60=140>>140 ducks remain

# Answer

140
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
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?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
140
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?
train