A rectangular billboard is 1.5 meters long and 2.3 meters wide. If you want to paint this billboard, use 0.6 kg of paint per square meter, how many kg of paint is needed in total?
一块长方形广告牌长1.5米，宽2.3米．如果要油漆这张广告牌，每平方米用油漆0.6千克，一共需要多少千克油漆？
<gadget id="calculator">1.5 * 2.3 * 0.6</gadget>
<output>2.07</output>

<result>2.07</result>