<|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
Great work so far! Now, take a look at the Countdown game. Your challenge is to get really good at this puzzle by using a set of five randomly drawn numbers and the basic arithmetic operations (+, -, *, /) to reach the target number. Complete the following task to enhance your skills: <think>Show your solution process below explaining how you arrived at the result. Clearly show each step with the arithmetic operations used. For example, you might start with the basic operations like addition and subtraction, but you can build upon these to include multiplication or division where applicable. Each number should be used only once in the equation. This is a more challenging problem but also very educational to solve. Here is the set of numbers to work with: [12, 13, 8, 10]. What is the target number you aim to reach? Challenge yourself and show your solution using your understanding of arithmetic rules. Verification: The final equation should satisfy the criteria and equal the target number. For example, <answer> </answer> where the equation is a valid mathematical expression using the provided numbers and numbers only once.</think>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>