If $8210 = 8.21 \times 10^{\square}$, then what is the value that should go in the $\square$?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $8210 = 8.21 \times 10^{\square}$, then what is the value that should go in the $\square$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
3
If $8210 = 8.21 \times 10^{\square}$, then what is the value that should go in the $\square$?
train