A living room is 8 meters long, 5 meters wide, and 3 meters high. The area of doors and windows is 12 square meters. Now the walls and roof of this living room are to be painted. How many square meters is the painted area?
一间客厅长8米，宽5米，高3米，门窗面积12平方米，现在要把这个客厅的四壁和房顶粉刷涂料，粉刷涂料的面积是多少平方米？
<gadget id="calculator">8 * 5</gadget>
<output>40</output>

<gadget id="calculator">8 * 3 * 2</gadget>
<output>48</output>

<gadget id="calculator">5 * 3 * 2</gadget>
<output>30</output>

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

<gadget id="calculator">40 + 48 + 18</gadget>
<output>106</output>

<result>106</result>