Given that $y=3$, evaluate $(1+y)^y$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Given that $y=3$, evaluate $(1+y)^y$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
64
Given that $y=3$, evaluate $(1+y)^y$.
train