If $3 \times 11 \times 13 \times 21 = 2005 +b$, what is the value of $b$?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If $3 \times 11 \times 13 \times 21 = 2005 +b$, what is the value of $b$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
7004
If $3 \times 11 \times 13 \times 21 = 2005 +b$, what is the value of $b$?
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