There is a cuboid pillar in the hall, 6 meters high, and the bottom is a square with a side length of 0.5 meters. If paint is painted around the pillar, how many kilograms of paint will be needed for every kilogram of paint on 5 square meters?
大厅里有一根长方体柱子，高6米，底面是边长为0.5米的正方形．如果给这个柱子四周涂漆，按每千克漆涂5平方米计算，需要用漆多少千克？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">0.5 * 6 * (4/5)</gadget>
<output>2.4</output>

<result>2.4</result>