<|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 provided numbers [99, 73, 25, 12], create an equation that equals 48. Use basic arithmetic operations (+, -, *, /), and ensure that each number is used only once. Show your work in <think> </think> tags. Your final result should be presented in <answer> </answer> tags, similar to <answer> (1 + 2) / 3 = 1 </answer>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>