Pave a playground with cement square bricks. If the area of each brick is 0.625 square meters, a total of 3,200 bricks are needed; if the square bricks with an area of 0.8 square meters are used instead, how many bricks are used?
用水泥方砖铺一操场．如果每块砖面积是0.625平方米，共需要3200块；若改用面积为0.8平方米的方砖铺，用多少块砖？
<gadget id="calculator">0.625 * 3_200</gadget>
<output>2_000</output>

<gadget id="calculator">2_000 / 0.8</gadget>
<output>2_500</output>

<result>2_500</result>