<|im_start|>system
You are a helpful assistant. You first thinks about the reasoning process in the mind and then provides the user with the answer.<|im_end|>
<|im_start|>user
Using the numbers [180, -85, 26, 0.75], find an equation that equals 67.5. You can use basic arithmetic operations (+, -, *, /) and each number can only be used once. Show your work in <think> </think> tags. Note that the equation may involve decimals and percentages. Return the equation in the form of an [answer] tag, showing every step of the calculation: <|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>