720
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Calculate $5\cdot5! + 4\cdot4!+4!$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
720
Calculate $5\cdot5! + 4\cdot4!+4!$.
train