A street billboard is a parallelogram with a base of 12.5 meters and a height of 6.4 meters. If the billboard is to be painted with paint, 0.6 kg of paint is used per square meter. At least how many kilograms of paint should be prepared?
一块街头广告牌是平行四边形，底是12.5米，高6.4米，如果要把这块广告牌刷油，每平方米用油漆0.6千克．至少需要准备多少千克油漆？
<gadget id="calculator">12.5 * 6.4 * 0.6</gadget>
<output>48</output>

<result>48</result>