<|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
 An industrial machine can make 6 shirts a minute. It worked for some minutes yesterday and made 14 shirts today. The machine made altogether 156 shirts. How many minutes did the machine work yesterday? 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
23
An industrial machine can make 6 shirts a minute. It worked for some minutes yesterday and made 14 shirts today. The machine made altogether 156 shirts. How many minutes did the machine work yesterday?
test