Xiaohong's income this year is 117% of last year's. How much more income this year than last year?
小红家今年的收入是去年的117%，今年比去年多收入多少．
<gadget id="calculator">117 / 100</gadget>
<output>117/100 = around 1.17</output>

<gadget id="calculator">(117/100) - 1</gadget>
<output>17/100 = around 0.17</output>

<result>17/100 = around 0.17</result>