A rectangular cistern is 6 meters long and 3 meters wide. Floor tiles with an area of 9 square decimeters are laid on the bottom of the pool. How many such floor tiles are needed?
一个长方形蓄水池，长6米，宽3米，在池底铺上面积为9平方分米的地板砖，需要多少块这样的地板砖？
<gadget id="calculator">3 / 0.09</gadget>
<output>33.333333</output>

<gadget id="calculator">6 * 33.333333</gadget>
<output>199.999998</output>

<result>199.999998</result>