456
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
What is the value of $\displaystyle\frac{235^2-221^2}{14}$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
456
What is the value of $\displaystyle\frac{235^2-221^2}{14}$?
train