From August 22nd to 30th, 2015, the World Athletics Championships will be held in Beijing, the capital of my country. Jingyang community holds a gymnastics photography exhibition. It is necessary to paste wallpaper on the four walls of an exhibition room with a length of 9 meters, a width of 6 meters and a height of 3 meters. Excluding doors and windows of 14 square meters, the wallpaper is 25 yuan per square meter. How much is the total cost of wallpaper?
2015年8月22日～30日，世界田径锦标赛将在我国首都北京举行．旌阳社区举办体操摄影展，要给一个长9米，宽6米，高3米的展室四壁贴墙纸，除去门窗14平方米，每平方米墙纸25元，共要多少元的墙纸？
<gadget id="calculator">9 * 3</gadget>
<output>27</output>

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

<gadget id="calculator">27 + 18</gadget>
<output>45</output>

<gadget id="calculator">45 * 2</gadget>
<output>90</output>

<gadget id="calculator">90 - 14</gadget>
<output>76</output>

<gadget id="calculator">25 * 76</gadget>
<output>1_900</output>

<result>1_900</result>