The school makes 2 curtains for each class. The price of each curtain is 48 yuan. There are 20 classes in the school. How much is the total cost?
学校为每班作2个窗帘，每个窗帘的价格是48元，全校20个班，一共需要多少元？
<gadget id="calculator">2 * 48 * 20</gadget>
<output>1_920</output>

<result>1_920</result>