<|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
 There is a collection of cells, where two cells die every hour, and the remaining cells each split into two. Assuming there are initially 10 cells, how many hours later will there be 1540 cells? 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
9
There is a collection of cells, where two cells die every hour, and the remaining cells each split into two. Assuming there are initially 10 cells, how many hours later will there be 1540 cells?
test