<|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 [77, 6, 20, 29], craft an equation that sums up to 77. You might need to use basic arithmetic operations (+, -, *, /) creatively and each number may only be used once. Make sure you show your work in <think> </think> tags and provide the final equation with its corresponding steps. For instance, if the equation turns out as (X + Y - Z) = 77, you should explain how X, Y, and Z were derived and what each part contributes. Any working out showing your calculations should be placed in the <think> </think> tags. Please return the final equation and work in <answer> </answer> tags, just like the example. The format should be <answer> [Final Equation and How It Was Derived] </answer>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>