To paint the four walls of a warehouse with a length of 10 meters, a width of 6 meters, and a width of 3 meters, how many square meters is the painted area except for the area of 23.8 square meters of doors and windows?
要粉刷一间长10米、宽6米、3米的仓库的四面墙壁，除去门窗面积23.8平方米外，粉刷的面积是多少平方米？
<gadget id="calculator">10 * 3</gadget>
<output>30</output>

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

<gadget id="calculator">30 + 18</gadget>
<output>48</output>

<gadget id="calculator">48 * 2</gadget>
<output>96</output>

<gadget id="calculator">96 - 23.8</gadget>
<output>72.2</output>

<result>72.2</result>