A classroom is 8 meters long, 6 meters wide, and 4 meters high. To paint the ceiling and surroundings of the classroom, excluding the door and window area of 30m**2, how much area should be painted?
一个教室的长是8米，宽是6米，高是4米．要粉刷教室的天花板和四周，除去门窗面积30米**2，要粉刷多大的面积？
<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 - 30</gadget>
<output>18</output>

<gadget id="calculator">48 + 64 + 18</gadget>
<output>130</output>

<result>130</result>