<|im_start|>system
You are a helpful assistant. You first think about the reasoning process in the mind and then provide the user with the answer. You should try to truely solve the question by yourself without cheating.  <|im_end|>
<|im_start|>user
 A train 120 m long is running at 60 kmph. It takes 21.598272138228943 seconds to pass a platform of a certain length. How long is the platform? Show your work in <think> </think> tags. And return the final answer in <answer> </answer> tags.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>
user
240
A train 120 m long is running at 60 kmph. It takes 21.598272138228943 seconds to pass a platform of a certain length. How long is the platform?
test