Students from 6 classes in the third grade of Yufeng Primary School participated in the Olympic torch event. There are 20 students in each class, and each student needs 2 balloons. How many balloons are needed in total?
育丰小学三年级6个班的同学参加迎奥运圣火活动，每个班有20个同学，每个同学需要2个气球，一共需要多少个气球？
<gadget id="calculator">20 * 6 * 2</gadget>
<output>240</output>

<result>240</result>