The students held a parade performance, with 20 people in each row, and a total of 10 rows. How many people participated in the queue performance?
同学们举行队列表演，每列20人，一共排了10列，共有多少人参加队列表演？
<gadget id="calculator">20 * 10</gadget>
<output>200</output>

<result>200</result>