A square floor tile has a side length of 6 decimeters, and 40 such floor tiles just cover the floor of a room. What is the area of the floor in this room in square decimeters?
一种正方形地砖的边长是6分米，用40块这样的地砖正好铺满一个房间的地面．这个房间地面的面积是多少平方分米？
<gadget id="calculator">6 * 6 * 40</gadget>
<output>1_440</output>

<result>1_440</result>