A parallelogram billboard has a base of 12.5 meters and a height of 6 meters. If you want to paint the front of this billboard, you need to use 0.6 kilograms of paint per square meter, so how many kilograms of paint do you need to prepare at least?
一块平行四边形广告牌，底是12.5米，高是6米．如果要油漆这块广告牌的正面，每平方米用油漆0.6千克，那么至少需要准备多少千克油漆？
<gadget id="calculator">12.5 * 6 * 0.6</gadget>
<output>45</output>

<result>45</result>