The fruit shop sells 18 boxes of apples in the morning and 23 boxes of the same apples in the afternoon. A yuan per box of apples. How much is the total charge for the apples sold in the fruit shop that day?
水果店上午卖出苹果18箱，下午卖出同样的苹果23箱．每箱苹果a元．这天水果店卖出的苹果共可收多少元．
<gadget id="calculator">23 + 18</gadget>
<output>41</output>

<result>41</result>