Pave the floor with square bricks of the same size. It takes 200 blocks to pave 32 square meters. How many blocks need to be added if the pavement is 100 square meters?
用同样大小的方砖铺地．铺32平方米共用了200块，如果铺100平方米，需增加多少块？
<gadget id="calculator">32 / 200</gadget>
<output>4/25 = around 0.16</output>

<gadget id="calculator">100 / (4/25)</gadget>
<output>625</output>

<gadget id="calculator">625 - 200</gadget>
<output>425</output>

<result>425</result>