It takes 2,000 bricks to pave the classroom with square bricks with an area of 225 square centimeters. If the square bricks with an area of 625 square centimeters are used to pave the floor, how many square bricks are needed?
用面积225平方厘米的方砖给教室铺地，需要2000块，如果该用面积是625平方厘米的方砖铺地，需要方砖多少块？
<gadget id="calculator">225 * 2_000</gadget>
<output>450_000</output>

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

<result>720</result>