It takes 2,000 bricks to pave the floor with square bricks with an area of 900cm**2. If the floor is paved with square bricks with a side length of 40 cm, how many bricks are needed?
用面积是900cm**2的方砖铺地需要2000块，如果改用边长是40厘米的方砖铺地，需要多少块？
<gadget id="calculator">900 * 2_000</gadget>
<output>1_800_000</output>

<gadget id="calculator">40 * 40</gadget>
<output>1_600</output>

<gadget id="calculator">1_800_000 / 1_600</gadget>
<output>1_125</output>

<result>1_125</result>