The length of a classroom is 10 meters, the width is 6 meters, the height is 3 meters, and the area of doors and windows is 8 square meters. Now we need to paint the walls and ceiling of this room. If 0.2 kilograms of paint is needed per square meter, how many kilograms of paint are needed in total?
一个教室的长10米，宽6米，高3米，门窗面积是8平方米．现在要把这个房间的四壁和顶面粉刷涂料，如果每平方米需要涂料0.2千克，一共要涂料多少千克？
<gadget id="calculator">10 * 6</gadget>
<output>60</output>

<gadget id="calculator">10 * 3 * 2</gadget>
<output>60</output>

<gadget id="calculator">6 * 3 * 2</gadget>
<output>36</output>

<gadget id="calculator">36 - 8</gadget>
<output>28</output>

<gadget id="calculator">60 + 60 + 28</gadget>
<output>148</output>

<gadget id="calculator">148 * 0.2</gadget>
<output>29.6</output>

<result>29.6</result>