On a sidewalk 180 meters long and 6 meters wide, how many square bricks with a side length of 3 decimeters should be paved?
在一段长180米，宽6米的人行道上，铺上边长3分米的正方形方砖，要铺多少块？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) * (3/10)</gadget>
<output>9/100 = around 0.09</output>

<gadget id="calculator">6 / (9/100)</gadget>
<output>200/3 = around 66.666667</output>

<gadget id="calculator">180 * (200/3)</gadget>
<output>12_000</output>

<result>12_000</result>