Mom bought 15 pears, Xiaohua ate 3, and put the rest in three bags on average, how many pears are in each bag on average.
妈妈买了15个梨，小华吃掉3个后，把剩下平均放在三个袋子里，平均每个袋子里装多少个．
<gadget id="calculator">15 - 3</gadget>
<output>12</output>

<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<result>4</result>