There is a parallelogram billboard on the street, with a base of 12.2 meters and a height of 9 meters. If it costs 50 yuan per square meter to paint, how much does it cost to paint this billboard?
街头有一块平行四边形的广告牌，底是12.2米，高是9米，如果用油漆刷每平方米需要费用50元，刷这块广告牌需要多少钱？
<gadget id="calculator">12.2 * 9 * 50</gadget>
<output>5_490</output>

<result>5_490</result>