A rectangular pavement with a length of 27 meters and a width of 1.8 meters is paved with square floor tiles with a side length of 0.3 meters. At least how many such floor tiles are needed?
一条长方形人行道路面，长27米，宽1.8米，用边长0.3米的正方形地砖铺路，至少需要多少块这样的地砖？
<gadget id="calculator">0.3 * 0.3</gadget>
<output>0.09</output>

<gadget id="calculator">1.8 / 0.09</gadget>
<output>20</output>

<gadget id="calculator">27 * 20</gadget>
<output>540</output>

<result>540</result>