There are 16 rows of seats on the first floor of the station lounge, and 12 rows of seats on the second floor, each row can seat 9 people. How many people can rest in this station lounge at the same time?
车站休息室一楼有16排座位，二楼有12排座位，每排可坐9人．这个车站休息室可同时供多少人休息？
<gadget id="calculator">16 + 12</gadget>
<output>28</output>

<gadget id="calculator">28 * 9</gadget>
<output>252</output>

<result>252</result>