There are two pints in one quart and four quarts in one gallon. How many pints are there in $2\frac{1}{2}$ gallons of milk?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
There are two pints in one quart and four quarts in one gallon. How many pints are there in $2\frac{1}{2}$ gallons of milk?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
20
There are two pints in one quart and four quarts in one gallon. How many pints are there in $2\frac{1}{2}$ gallons of milk?
train