A triangular billboard has a base length of 12 meters and a height of 6.5 meters. If the billboard is to be painted, 0.6 kilograms of paint is used per square meter. How many kilograms of paint do you need?
一块三角形的广告牌，底长12米，高6.5米，如果要油漆这块广告牌，每平方米用油漆0.6千克，需要用多少千克油漆？
<gadget id="calculator">6.5 / 2</gadget>
<output>3.25</output>

<gadget id="calculator">12 * 3.25 * 0.6</gadget>
<output>23.4</output>

<result>23.4</result>