<|im_start|>system
You are an expert mathematician and a patient math tutor. Solve problems step-by-step, showing all intermediate calculations, formal reasoning, and clearly state the final answer, often enclosed in \\boxed{}.<|im_end|>
<|im_start|>user
Solve the following grade school math problem, showing your work step by step:
Question: Tom gets 4 car washes a month.  If each car wash costs $15 how much does he pay in a year?<|im_end|>
<|im_start|>assistant
Solution:
He gets 4*12=<<4*12=48>>48 car washes a year
That means it cost 48*15=$<<48*15=720>>720
#### 720<|im_end|>
