Xiao Ming’s room is 6 meters long, 4 meters wide, and 3 meters high. The area of the doors and windows is 4 square meters. The walls and ceiling of the room need to be painted. Please calculate the actual area to be painted?
小明的房间长6米，宽4米，高3米，门窗的面积是4平方米，要粉刷房间的墙壁和天花板，请你计算粉刷的实际面积是多少平方米？
<gadget id="calculator">6 * 4</gadget>
<output>24</output>

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

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">18 + 12</gadget>
<output>30</output>

<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<gadget id="calculator">60 - 4</gadget>
<output>56</output>

<gadget id="calculator">24 + 56</gadget>
<output>80</output>

<result>80</result>