This year's corn output is 1/8 higher than last year's. This means that last year's corn output is regarded as the unit "1", and this year's output is equivalent to last year's output.
今年玉米产量比去年增产(1/8)，是把去年玉米产量看作单位"1"，今年产量相当于去年产量的多少．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 + (1/8)</gadget>
<output>9/8 = around 1.125</output>

<result>9/8 = around 1.125</result>