It takes 2,000 bricks to pave the floor with square bricks with a side length of 15 cm. How many bricks are needed to pave the ground with square bricks with a side length of 25 cm?
用边长是15cm的方砖铺地，需要2000块，如果改用边长为25cm的方砖铺地，需要多少块？
<gadget id="calculator">15 * 15 * 2_000</gadget>
<output>450_000</output>

<gadget id="calculator">25 * 25</gadget>
<output>625</output>

<gadget id="calculator">450_000 / 625</gadget>
<output>720</output>

<result>720</result>