<|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
 How can we form five two-digit numbers using the digits $0, 1, \ldots, 9$ (using each digit exactly once) so that the product of the resulting numbers is as large as possible? 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
1785641760
How can we form five two-digit numbers using the digits $0, 1, \ldots, 9$ (using each digit exactly once) so that the product of the resulting numbers is as large as possible?
test