John buys 2 dozen cookies.  He eats 3.  How many cookies does he have left? Let's think step by step and output the final answer after "####".
user
He got 2*12=<<2*12=24>>24 cookies
So he has 24-3=<<24-3=21>>21 cookies left
#### 21
John buys 2 dozen cookies.  He eats 3.  How many cookies does he have left?
train