It takes 3 minutes for 3 children to eat 3 apples at the same time; how many minutes does it take for 5 children to eat 5 apples of equal size at the same time?
3个小朋友同时吃3个的苹果，用3分钟吃完；5个小朋友同时吃5个大小相等的苹果需要多少分钟才能吃完．
<gadget id="calculator">3 / 3</gadget>
<output>1</output>

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

<result>3</result>