A parallelogram billboard has a base length of 14 meters and a height of 3.5 meters. If 0.8 kilograms of paint is used per square meter, how many kilograms of paint should be used to paint the billboard?
一块平行四边形广告牌，底长14米，高3.5米，如果每平方米用油漆0.8千克，刷好这块广告牌至少要用多少千克油漆？
<gadget id="calculator">14 * 3.5 * 0.8</gadget>
<output>39.2</output>

<result>39.2</result>