The length of a classroom is 8 meters, the width is 6 meters, and the height is 4 meters. It is necessary to paint the four walls and the flat roof of the classroom. The area of the classroom is 24 square meters, excluding the doors, windows and blackboard. How many square meters is the painted area?
一个教室的长是8米，宽是6米，高是4米，要粉刷教室的四壁和平顶，除去门窗和黑板面积24平方米，粉刷的面积是多少平方米？
<gadget id="calculator">8 * 6</gadget>
<output>48</output>

<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">48 + 32 + 24</gadget>
<output>104</output>

<gadget id="calculator">104 * 2</gadget>
<output>208</output>

<gadget id="calculator">208 - 48 - 24</gadget>
<output>136</output>

<result>136</result>