Mom bought back 30 candies, and there were still 2 candies left after eating for a week. How many pills do you eat on average every day?
妈妈买回30颗糖，明明吃了一周后还剩2颗．明明平均每天吃多少颗？
<gadget id="calculator">30 - 2</gadget>
<output>28</output>

<gadget id="calculator">28 / 7</gadget>
<output>4</output>

<result>4</result>