There are 420 seats on the first floor of the People's Theater, and 22 rows of seats on the second floor, with 30 seats in each row. How many seats does the People's Theater have in total?
人民剧院一楼有420个座位，二楼有座位22排，每排有30个座位，人民剧院一共有多少个座位？
<gadget id="calculator">22 * 30</gadget>
<output>660</output>

<gadget id="calculator">420 + 660</gadget>
<output>1_080</output>

<result>1_080</result>