<|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 [2, 5, 13, 19], create an equation that equals 87. This puzzle requires utilizing operations like addition, subtraction, multiplication, and division, and potentially more complex ones such as exponents or square roots. Show your work in <think> </think> tags to demonstrate the logic behind your solution. Upon arriving at your final equation, present the result in a specific format: <answer> </answer>, for example, if your equation is (5^2) + 13 + (19 * (2/5)) = 87, return <answer>(5^2) + 13 + (19 * (2/5)) = 87</answer>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>