<|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 are 28672 numbers with a certain number of digits that do not contain a specific digit or another digit (7). How many 5-digit numbers are there that do not contain this specific digit and 7? 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
28672
There are 28672 numbers with a certain number of digits that do not contain a specific digit or another digit (7). How many 5-digit numbers are there that do not contain this specific digit and 7?
test