The interior designer needs to draw ocean-themed murals on the walls and ceiling of the front reception room of an aquarium. The reception room is 12m long, 5m wide, and 3.4m high. The area after deducting the doors and windows is 12m**2. How many square meters is the area?
室内设计师要在某海洋馆前台接待室的四周墙面和天花板上绘制海洋主题壁画，接待室长12m，宽5m，高3.4m，扣除门窗的面积12m**2，设计师要绘制壁画的面积是多少平方米？
<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">12 * 3.4 * 2</gadget>
<output>81.6</output>

<gadget id="calculator">5 * 3.4 * 2</gadget>
<output>34</output>

<gadget id="calculator">34 - 12</gadget>
<output>22</output>

<gadget id="calculator">60 + 81.6 + 22</gadget>
<output>163.6</output>

<result>163.6</result>