The length of the living room is 6 meters, the width is 3 meters, and the floor of the living room is paved with square floor tiles with a side length of 3 decimeters. How many such floor tiles are needed?
客厅的长6米，宽3米，用边长是3分米的正方形地砖铺客厅地面，需要多少块这样的地砖？
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">100 / 9</gadget>
<output>100/9 = around 11.111111</output>

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

<result>200</result>