Last month's electricity consumption was more than this month's (1/9), and last month's electricity consumption was this month's amount.
上个月用电量比这个月多(1/9)，上个月用电量是这个月的多少．
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 + (1/9)</gadget>
<output>10/9 = around 1.111111</output>

<result>10/9 = around 1.111111</result>