The school uses an average of 280 kilowatt-hours of electricity per month. According to this calculation, how much electricity is shared by the school in a year?
学校每月平均用电280度，照这样计算，学校一年共用电多少度？
<gadget id="calculator">280 * 12</gadget>
<output>3_360</output>

<result>3_360</result>