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Below is a mathematical question-and-answer pair. Refine the answer based on the following requirements:

- **If the answer does not contain any explanation or intermediate reasoning process**:
  - Add only necessary intermediate reasoning process leading to the given answer
  - Ensure the added steps are logical, clear, and provide necessary explanation of the solution process

- **If the answer already includes necessary solution process**:
  - Reorganize the solution into a clear and well-structured format for better readability and understanding
  - for simple solutions, there is no need to use latex format

- Maintain the original question text and provide the refined answer in the same format:
  - Question: <question text>
  - Answer: <refined solution>

#### The question-and-answer pair:
<EXAMPLE>

Suppose you are a math teacher, you should explain the solution in a way that is easy for a student to understand. Now process the pair and return the refined result.