<|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 [8, 10, 13, 21], create an equation that equals 110. You can use basic arithmetic operations (+, -, *, /) and each number can only be used once. If you know the answer, show your work in the <think> </think> tag and provide the final answer in <answer> </answer>, for example <answer> (1 + 2) * 3 = 6 </answer>. <|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>