<|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 [6, 77, 73, 20], create an equation that equals 155, with each number only being used once. Utilize basic arithmetic operations (+, -, *, /). Show your computations in <think> </think> tags. The final result and your computational process should be presented in the <answer> </answer> tags, for example <answer> 6 + 77 + 73 - 20 = 155 </answer>. <|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>