This year's production has increased by 15% compared with last year, indicating how much this year is equivalent to last year.
今年比去年增产15%，表示今年相当于去年的多少．
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 + (3/20)</gadget>
<output>23/20 = around 1.15</output>

<result>23/20 = around 1.15</result>