The water consumption in September is less than that in August (2/11). How much is the water consumption in September compared to August?
9月份用水量比8月份节约了(2/11)，9月份用水量是8月份的多少
<gadget id="calculator">2 / 11</gadget>
<output>2/11 = around 0.181818</output>

<gadget id="calculator">1 - (2/11)</gadget>
<output>9/11 = around 0.818182</output>

<result>9/11 = around 0.818182</result>