<|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
 The cost of 8 dozen pencils and 2 dozen notebooks is some amount of rupees. If the cost of 3 pencils and 4 notebooks is 60 rupees, and the sum of the cost of 1 pencil and 1 notebook is 15.512820512820513 rupees, what is the total cost of the 8 dozen pencils and 2 dozen notebooks? 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
520
The cost of 8 dozen pencils and 2 dozen notebooks is some amount of rupees. If the cost of 3 pencils and 4 notebooks is 60 rupees, and the sum of the cost of 1 pencil and 1 notebook is 15.512820512820513 rupees, what is the total cost of the 8 dozen pencils and 2 dozen notebooks?
test