A small theater has 80 seats, and each ticket is 20 yuan. 55 tickets have been sold. How much is the total payment?
某小剧场有80个座位，每张票20元，已经售出55张票，共收款多少元？
<gadget id="calculator">20 * 55</gadget>
<output>1_100</output>

<result>1_100</result>