Wang Yun’s family wants to decorate a new house. They plan to paste wallpaper on the four walls of a room with a length of 6 meters, a width of 4 meters, and a height of 3 meters. After deducting the area of doors and windows of 6 square meters, if the wallpaper costs 5 yuan per square meter, buy How much do these wallpapers cost?
王云家要装修新房，计划给一个长是6米，宽是4米，高是3米的房间的四壁贴上墙纸，扣除门窗面积6平方米，如果每平方米墙纸要花5元钱，买这些墙纸需要花去多少元？
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">18 + 12</gadget>
<output>30</output>

<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<gadget id="calculator">60 - 6</gadget>
<output>54</output>

<gadget id="calculator">5 * 54</gadget>
<output>270</output>

<result>270</result>