A classroom is 8 meters long, 6 meters wide, and 3.5 meters high. Now it is necessary to paint the walls and ceiling of the classroom. The area of doors, windows and blackboards is 14 square meters, and the average paint is 0.25 kg per square meter. How many kilograms of paint are needed to paint this classroom?
一个教室长8米，宽6米，高3.5米．现在要粉刷教室的墙壁和天花板，门窗和黑板的面积是14平方米，平均每平方米用涂料0.25千克，粉刷这个教室共需要涂料多少千克？
<gadget id="calculator">8 * 3.5</gadget>
<output>28</output>

<gadget id="calculator">6 * 3.5</gadget>
<output>21</output>

<gadget id="calculator">28 + 21</gadget>
<output>49</output>

<gadget id="calculator">49 * 2</gadget>
<output>98</output>

<gadget id="calculator">8 * 6</gadget>
<output>48</output>

<gadget id="calculator">48 - 14</gadget>
<output>34</output>

<gadget id="calculator">98 + 34</gadget>
<output>132</output>

<gadget id="calculator">0.25 * 132</gadget>
<output>33</output>

<result>33</result>