Simplify the radical $\sqrt{2940}$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Simplify the radical $\sqrt{2940}$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
14\sqrt{15}
Simplify the radical $\sqrt{2940}$.
train