<|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
Can you solve the Countdown game puzzle with these numbers? Use each number only once to create an equation that equals 50. You can use the basic arithmetic operations (+, -, *, /). Show your work in <think> </think> tags. And return the final equation and answer in <answer> </answer> tags, for example <answer> (2 + 3) * 4 = 16 + 5 = 21 </answer>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>