A path is 100 meters long and 5 meters wide. If the path is paved with square bricks with a side length of 2 decimeters, how many square bricks are needed?
一条小路长100米，宽5米，用边长为2分米的方砖铺这条小路，需要多少块方砖？
<gadget id="calculator">100 * 5</gadget>
<output>500</output>

<gadget id="calculator">0.2 * 0.2</gadget>
<output>0.04</output>

<gadget id="calculator">500 / 0.04</gadget>
<output>12_500</output>

<result>12_500</result>