<|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
Use the numbers [3, 12, 40, 20] to reach the target number 97. Note that there might be more than one correct equation. You can use *, /, +, and - operations any number of times. Each number should only be used once. Provide your answers in index order, just like [3, *, 12, +, 20, =, 42] for an answer. Show your work in <think> </think> tags to show the steps taken to reach the target number. Return your final equation and answer in <answer> </answer> tags for example <answer> (3 * 12) / 1 = 36 </answer>. Hint: Pay attention to the order of operations!<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>