<|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 [24, 64, 65, 50], make a mathematical equation that equals 102. Use each number only once, and explain your logic with base arithmetic operations. Show the final equation and answer in <think> </think> tags, with all the working detail included, such as <think>(a + b) * c - 24 = 102</think>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>