To decorate a living room, it takes 500 yuan to pave the floor with square bricks with a side length of 2 decimeters; for the second time, how many square bricks with a side length of 4 decimeters are used to pave the floor? (Answer with proportional knowledge)
装修一间客厅，用边长2分米的方砖铺地需要500块，；第二次用同用边长4分米的方砖铺地，要多少块？(用比例知识解答)
<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>