The turnover of Baixing Commercial Building this year has increased (1/9) compared with that of last year. How much of last year's turnover accounted for this year?
百兴商厦今年的营业额比去年提高了(1/9)，去年的营业额占今年的多少．
<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>

<gadget id="calculator">1 / (10/9)</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>