<|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
Welcome to the Countdown Game! Your target number is 100. You have the numbers [8, 25, 12, 4] available. Using the numbers (cannot be reused), the basic arithmetic operations (addition +, subtraction -, multiplication *, division /) and being careful with the sequence to make the equation correct, figure out what equation equals 100. Show your work in <think> </think> tags and return the final equation along with the answer in <answer> </answer> tags. For example: <answer>25 + 8 * 3 = 100</answer>. <|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>