The school has to paint the walls and ceiling of a classroom. It is known that the length of the classroom is 8 meters, the width is 6 meters, and the height is 3 meters. The area after deducting the doors and windows is 12.5 square meters. How many square meters is the area to be painted?
学校要粉刷一间教室的四壁和天花板．已知教室的长是8米，宽6米，高是3米，扣除门窗的面积12.5平方米，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 * 3</gadget>
<output>24</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">24 + 18</gadget>
<output>42</output>

<gadget id="calculator">42 * 2</gadget>
<output>84</output>

<gadget id="calculator">84 - 12.5</gadget>
<output>71.5</output>

<gadget id="calculator">48 + 71.5</gadget>
<output>119.5</output>

<result>119.5</result>