20
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Khali has to shovel snow off the sidewalk in front of his house. The sidewalk is 20 feet long and 2 feet wide. If the snow is $\frac{1}{2}$ foot deep, how many cubic feet of snow does Khali have to shovel off the sidewalk?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
20
Khali has to shovel snow off the sidewalk in front of his house. The sidewalk is 20 feet long and 2 feet wide. If the snow is $\frac{1}{2}$ foot deep, how many cubic feet of snow does Khali have to shovel off the sidewalk?
train