A parallelogram billboard has a base length of 8m and a height of 3.2m. If 0.7kg of paint is used per square meter, how many kilograms of paint should be used for this billboard at least?
一块平行四边形广告牌，底长8m，高3.2m，如果每平方米用油漆0.7千克，这块广告牌至少用多少千克油漆？
<gadget id="calculator">8 * 3.2 * 0.7</gadget>
<output>17.92</output>

<result>17.92</result>