To decorate a meeting room with a length of 10 meters, a width of 6 meters and a height of 4 meters, paste wallpapers around the meeting room and the ceiling, and deduct the door and window area of 30 square meters. At least how many square meters of wallpaper is needed?
装修一间长10米，宽6米，高4米的会议室，在会议室的四周和顶棚贴上壁纸，扣除门窗面积30平方米．至少需要壁纸多少平方米？
<gadget id="calculator">10 * 6</gadget>
<output>60</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">4 * 10</gadget>
<output>40</output>

<gadget id="calculator">60 + 24 + 40</gadget>
<output>124</output>

<gadget id="calculator">124 * 2</gadget>
<output>248</output>

<gadget id="calculator">248 - 60 - 30</gadget>
<output>158</output>

<result>158</result>