The length of a classroom is 10 meters, the width is 8 meters, and the height is 3.6 meters. The walls and roof of the classroom need to be painted. The area of the classroom is 35.5 square meters, excluding the doors, windows and blackboard. How many square meters is the painted area?
一间教室的长是10米，宽是8米，高是3.6米，要粉刷教室的四壁和屋顶，除去门窗和黑板面积35.5平方米，粉刷的面积是多少平方米？
<gadget id="calculator">10 * 8</gadget>
<output>80</output>

<gadget id="calculator">10 * 3.6</gadget>
<output>36</output>

<gadget id="calculator">8 * 3.6</gadget>
<output>28.8</output>

<gadget id="calculator">36 + 28.8</gadget>
<output>64.8</output>

<gadget id="calculator">64.8 * 2</gadget>
<output>129.6</output>

<gadget id="calculator">129.6 - 35.5</gadget>
<output>94.1</output>

<gadget id="calculator">80 + 94.1</gadget>
<output>174.1</output>

<result>174.1</result>