Dad bought 18 pieces of candy and gave them 9 pieces of candy to grandparents. The rest of our family of three shared the food equally. How many pieces of candy did each person eat?
爸爸买来18块糖，送给爷爷奶奶9块糖，剩下的我们一家三口平均分吃，每人吃到几块糖？
<gadget id="calculator">18 - 9</gadget>
<output>9</output>

<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<result>3</result>