<|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 construction team is building a railway tunnel. When $\frac{1}{3}$ of the task is completed, the team starts using new equipment, which increases the construction speed by $20\%$ but shortens the daily work time to $\frac{4}{5}$ of the original time for equipment maintenance. As a result, the project is completed in a total of 185 days. Based on these conditions, determine how many days it would take to complete the project without using the new equipment. 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
180
A construction team is building a railway tunnel. When $\frac{1}{3}$ of the task is completed, the team starts using new equipment, which increases the construction speed by $20\%$ but shortens the daily work time to $\frac{4}{5}$ of the original time for equipment maintenance. As a result, the project is completed in a total of 185 days. Based on these conditions, determine how many days it would take to complete the project without using the new equipment.
test