A rectangular living room is 9 meters long and 6 meters wide. If the living room is paved with square floor tiles with a side length of 3 decimeters, how many floor tiles are needed?
一个长方形客厅，长9米，宽6米．如果用边长是3分米的正方形的地板砖铺这个客厅，需要多少地板砖？
<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">9 * (200/3)</gadget>
<output>600</output>

<result>600</result>