If 3 people eat 3 apples at the same time, it will take 3 minutes to finish them, and if 9 people eat 9 apples at the same time, how many minutes will it take to finish them?
3人同时吃3个苹果，用3分钟吃完，9人同时吃9个苹果，多少分钟吃完．
<gadget id="calculator">3 / 3</gadget>
<output>1</output>

<gadget id="calculator">1 * 3</gadget>
<output>3</output>

<result>3</result>