<|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 porter needs to transport 200 buns from the kitchen to the construction site (he is currently in the kitchen). Each time, he can carry 40 buns. However, he eats 1 bun each way, whether traveling from the kitchen to the construction site or from the construction site to the kitchen. How many buns can the porter transport to the construction site at most? 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
191
A porter needs to transport 200 buns from the kitchen to the construction site (he is currently in the kitchen). Each time, he can carry 40 buns. However, he eats 1 bun each way, whether traveling from the kitchen to the construction site or from the construction site to the kitchen. How many buns can the porter transport to the construction site at most?
test