Find $3.72\times 1000$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find $3.72\times 1000$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
3720
Find $3.72\times 1000$.
train