It is necessary to paint the ceiling and four walls of a conference room with a length of 16 meters, a width of 8 meters and a height of 3 meters. Excluding the area of doors and windows of 30 square meters, how many square meters is the area to be painted?
要粉刷一间长16米、宽8米、高3米的会议室的天花板和四壁，除去门窗面积30平方米，要粉刷的面积是多少平方米？
<gadget id="calculator">16 * 8</gadget>
<output>128</output>

<gadget id="calculator">16 * 3 * 2</gadget>
<output>96</output>

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

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

<gadget id="calculator">128 + 96 + 18</gadget>
<output>242</output>

<result>242</result>