<|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 [70, 53, -2, 0], create an equation that equals 123. The numbers can only be used once and you should use a combination of basic arithmetic operations (+, -, *, /) to reach the target. Show your work in <think> </think> tags, for example, <think>100 + 23 = 123</think>, if your calculation follows this pattern. Be creative and think outside the box to reach your target number. Return the final equation and your step-by-step reasoning. Remember, each number can only be used once. Ans: <|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>