On the floor of a room with a length of 9 meters and a width of 6 meters, square floor tiles with a side length of 3 decimeters are laid. How many such floor tiles are needed in total?
在一块长9米，宽6米的房间地面上，铺上边长是3分米的正方形地板砖，一共需要多少块这样的地砖？
<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>