The side length of a square floor tile is 40 cm. Now lay the floor tiles on the floor of a rectangular room. There are 10 tiles on the long side of the room and 8 tiles on the wide side. Calculate the perimeter of the room in centimeters ?
一块正方形地砖的边长是40厘米，现在将地砖铺在一个长方形房间的地面上，房间长的一边铺了10块，宽的一边铺了8块，算一算这个房间的周长是多少厘米？
<gadget id="calculator">720 * 2</gadget>
<output>1_440</output>

<result>1_440</result>