If 4 people eat 4 apples at the same time, and it takes 3 minutes to finish them, then how long will it take for 8 people to eat 8 apples at the same time?
4个人同时吃4个苹果，用了3分钟吃完，那么8个人同时吃8个苹果，吃完需要的时间是多少．
<gadget id="calculator">4 / 4</gadget>
<output>1</output>

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

<result>3</result>