-4
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find $w$, such that $5^65^w=25$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
-4
Find $w$, such that $5^65^w=25$.
train