During the event celebrating the return of the Shenzhou 7 spacecraft, waist drum teams from 12 communities in the city gathered in Hongdu Square. Each community formed 6 groups with 25 people in each group. How many people participated in this event?
在庆祝神舟七号飞船返回的活动中，全市有12个社区的腰鼓队欢聚在红都广场，每个社区排成6组，每组有25人，此次活动一共有多少人参加？
<gadget id="calculator">25 * 6 * 12</gadget>
<output>1_800</output>

<result>1_800</result>