There are five cuboid marble columns in the auditorium. To welcome the Spring Festival, it is planned to wrap a layer of golden wallpaper on the surface of the marble columns. It is known that the length and width of the stone columns are 1.5 meters, and the height is 8 meters. How big is the area covered with golden wallpaper?
礼堂里有五根长方体的大理石柱，为迎接春节，打算在大理石柱表面包一层金色墙纸，已知石柱的长、宽都是1.5米，高是8米，包金色墙纸的面积有多大？
<gadget id="calculator">1.5 * 8 * 4 * 5</gadget>
<output>240</output>

<result>240</result>