Xiaoli's room is 5m long, 4m wide, 3m high, and has a door and window area of 12 square meters. Xiaoli plans to paste a beautiful wallpaper on the four walls and roof of the room. This kind of wallpaper costs 80 yuan per square meter. Please do the math for Xiaoli, how much is the minimum cost to buy wallpaper?
小莉的房间长5m，宽4m，高3米，门窗面积12平方米．小莉计划在房间的四壁和房顶贴一种很好看的壁纸，这种壁纸每平方米80元．请你帮小莉算算，买壁纸至少需要多少元？
<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">5 * 3</gadget>
<output>15</output>

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

<gadget id="calculator">15 + 12</gadget>
<output>27</output>

<gadget id="calculator">27 * 2</gadget>
<output>54</output>

<gadget id="calculator">54 - 12</gadget>
<output>42</output>

<gadget id="calculator">20 + 42</gadget>
<output>62</output>

<gadget id="calculator">62 * 80</gadget>
<output>4_960</output>

<result>4_960</result>