The school holds a broadcasting exercise competition. There are 12 classes in the third, fourth, and fifth grades, with a total of 600 students. Each class selects 16 people to participate in the competition. The rest of the students are spectators. How many people are the spectators?
学校举行广播操比赛，三、四、五年级12个班，共600人，每班选16人参加比赛，其余的同学当观众，当观众的有多少人？
<gadget id="calculator">16 * 12</gadget>
<output>192</output>

<gadget id="calculator">600 - 192</gadget>
<output>408</output>

<result>408</result>