A triangular board with a base of 8 meters and a height of 2.6 meters is painted on its surface. If 280 grams of paint is used per square meter, how many kilograms of paint are needed in total?
一块三角形的木板，底是8米，高是2.6米，在它的表面刷上油漆，如果每平方米用油漆280克，一共需要油漆多少千克？
<gadget id="calculator">2.6 / 2</gadget>
<output>1.3</output>

<gadget id="calculator">280 / 1_000</gadget>
<output>7/25 = around 0.28</output>

<gadget id="calculator">8 * 1.3 * 2 * (7/25)</gadget>
<output>5.824</output>

<result>5.824</result>