The mineral water factory packs a batch of mineral water into boxes, 24 bottles per box. After packing 20 boxes, there are still 10 bottles left. How many bottles of this batch of mineral water are there?
矿泉水厂把一批矿泉水装箱，24瓶装一箱．装好20箱后还剩10甁，这批矿泉水一共有多少瓶？
<gadget id="calculator">24 * 20</gadget>
<output>480</output>

<gadget id="calculator">480 + 10</gadget>
<output>490</output>

<result>490</result>