<|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 30. You may use basic arithmetic operations (+, -, *, /), and each number can only be used once. Share your solution step-by-step in <think> </think>, then post your final equation in <answer> </answer>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>