If the school uses square bricks with a side length of 2dm, it needs 500 pieces. If it uses square bricks with a side length of 4dm, how many pieces are needed?
学校用边长2dm的方砖铺地，需要500块，用边长4dm的方砖铺地，需要多少块？
<gadget id="calculator">2 * 2 * 500</gadget>
<output>2_000</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">2_000 / 16</gadget>
<output>125</output>

<result>125</result>