A classroom is 12 meters long, 5 meters wide, and 3 meters high. Now it is necessary to paint the walls and ceiling of the classroom. After deducting the blackboard area of 9.8 square meters, how many square meters is the painted area?
一间教室长12米，宽5米，高3米，现在要粉刷教室的四壁与天花板，扣除门窗黑板面积9.8平方米，粉刷的面积有多少平方米？
<gadget id="calculator">51 - 9.8</gadget>
<output>41.2</output>

<gadget id="calculator">60 + 41.2</gadget>
<output>101.2</output>

<result>101.2</result>