The school needs to paint the walls and roof of a classroom. Excluding doors, windows and blackboards, the area is 24 square meters. It is known that the classroom is 8 meters long, 6 meters wide, and 4 meters high. How many square meters is the area to be painted?
学校要粉刷一间教室的四壁和屋顶，除去门窗和黑板的面积24平方米，己知教室长8米，宽6米，高4米，要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 * 2</gadget>
<output>64</output>

<gadget id="calculator">6 * 4 * 2</gadget>
<output>48</output>

<gadget id="calculator">48 + 64 + 48</gadget>
<output>160</output>

<gadget id="calculator">160 - 24</gadget>
<output>136</output>

<result>136</result>