The side length of a square floor tile is 0.8 meters, and it takes exactly 1250 pieces to lay a square. How many square meters is the square?
一种正方形地砖的边长为0.8米，铺设一个广场正好用去1250块，这个广场的面积是多少平方米？
<gadget id="calculator">0.8 * 0.8 * 1_250</gadget>
<output>800</output>

<result>800</result>