<|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 [10, 70, 50, 8], create an equation that equals 856. You can use basic arithmetic operations (+, -, *, /) and each number can only be used once. Return the final equation and answer in <answer> </answer> tags to check your work.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>