Let $m \circ n = \frac{m+n}{mn+4}$. Compute $((\cdots((2005 \circ 2004) \circ 2003) \circ \cdots \circ 1) \circ 0)$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Let $m \circ n = \frac{m+n}{mn+4}$. Compute $((\cdots((2005 \circ 2004) \circ 2003) \circ \cdots \circ 1) \circ 0)$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
\frac{1}{12}
Let $m \circ n = \frac{m+n}{mn+4}$. Compute $((\cdots((2005 \circ 2004) \circ 2003) \circ \cdots \circ 1) \circ 0)$.
train