<|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 [15, 68, 89, 4], craft an equation that results in 132. Utilize basic arithmetic operations (+, -, *, /) appropriately, each number must be used only once. Show your work in <think> </think> tags and follow the logic below. Return the expression and calculation in <answer> </answer> tags, see the example provided: <answer> (68 - 4) * 4 = 264 </answer>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>