<|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 [73, 20, 6, 1], create an expression that yields 47 using basic arithmetic operations (+, -, *, /). Each number can only be used once. Show your work in <think> </think> tags, and return the result in <answer> </answer> form, such as <answer> 20 + 23 = 43 </answer>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>