A billboard in the shape of a parallelogram has a base of 12.5 meters and a height of 6.4 meters. If you want to paint this billboard with paint, you need 0.6 kilograms of paint per square meter, how many kilograms of paint do you need?
一块平行四边形的广告牌，底是12.5米，高是6.4米．如果要用油漆漆这块广告牌，每平方米用油漆0.6千克，需要油漆多少千克？
<gadget id="calculator">12.5 * 6.4 * 0.6</gadget>
<output>48</output>

<result>48</result>