Lele's room is 6.4 meters long, 4 meters wide and 2.5 meters high. Now we need to paste wallpaper on the walls around the room, but not on the doors and windows. It is known that the total area of doors and windows is 6 square meters, and the wallpaper is 5.5 yuan per square meter. Find the total cost of pasting these wallpapers.
乐乐的房间长6.4米，宽4米，高2.5米．现要在房间四周墙壁上贴墙纸，门窗不贴．已知门窗的总面积为6平方米，每平方米的墙纸为5.5元，求贴这些墙纸的总费用．
<gadget id="calculator">6.4 * 2.5</gadget>
<output>16</output>

<gadget id="calculator">4 * 2.5</gadget>
<output>10</output>

<gadget id="calculator">16 + 10</gadget>
<output>26</output>

<gadget id="calculator">26 * 2</gadget>
<output>52</output>

<gadget id="calculator">52 - 6</gadget>
<output>46</output>

<gadget id="calculator">5.5 * 46</gadget>
<output>253</output>

<result>253</result>