A classroom is 8m long, 6m wide, and 4m high. Now it is necessary to paint the walls and ceiling of the classroom. After deducting the area of doors, windows and blackboards of 30m2, how much is the area to be painted?
一间教室长8m、宽6m，高4m，现在要粉刷教室的墙壁和天花板，扣除门窗、黑板面积30㎡，要粉刷的面积是多少㎡？
<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>