The length of a classroom is 10m, the width is 8m, and the height is 4m. To paint the roof and four walls of the classroom, excluding the doors, windows and blackboard area of 25m**2, how many square meters is the painted area?
一间教室的长是10m，宽是8m，高是4m．要粉刷教室的屋顶和四面墙壁，除去门窗和黑板面积25m**2，粉刷的面积是多少平方米？
<gadget id="calculator">10 * 8</gadget>
<output>80</output>

<gadget id="calculator">10 * 4 * 2</gadget>
<output>80</output>

<gadget id="calculator">8 * 4 * 2</gadget>
<output>64</output>

<gadget id="calculator">64 - 25</gadget>
<output>39</output>

<gadget id="calculator">80 + 80 + 39</gadget>
<output>199</output>

<result>199</result>