<|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 [3, 17, 38, 43, 70], create an equation that equals 505. You are allowed to use basic arithmetic operations (addition, subtraction, multiplication, division) but you can only use each number up to twice. Also, each number can only be used with other numbers in the equation once (if a number is used twice, it cannot be used with any other number except the second instance of itself). Show your work in <think> </think> tags. And return the final equation and answer in the following format: <answer> </answer>, for example <answer> (1 + 2) * 3 = 9 </answer>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>