A street billboard is a parallelogram with a base of 12 meters and a height of 5 meters. If you want to paint this billboard and use 60 grams of paint per square meter, how many grams of paint do you need to prepare at least?
一块街头广告牌是平行四边形，底是12米，高是5米．如果要油漆这块广告牌，每平方米用油漆60克，至少需要准备多少克油漆？
<gadget id="calculator">12 * 5 * 60</gadget>
<output>3_600</output>

<result>3_600</result>