Xiaoli's room is paved with a square brick with a side length of 6 decimeters, and a total of 50 pieces were used. What is the area of this room in square meters?
小丽的房间用一种边长为6分米的方砖铺地，共用了50块．这个房间的面积是多少平方米？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">6 * 6 * (1/2)</gadget>
<output>18</output>

<result>18</result>