How many square floor tiles with a side length of 30 cm are used to pave a section of sidewalk with a length of 18 meters and a width of 3 meters?
用边长为30厘米的正方形地砖铺一段长18米、宽3米的人行道路面，至少需要多少块这样的地砖？
<gadget id="calculator">30 / 100</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">3 / (9/100)</gadget>
<output>100/3 = around 33.333333</output>

<gadget id="calculator">18 * (100/3)</gadget>
<output>600</output>

<result>600</result>