The output in September is more (1/5) than that in October, and the output in September is equivalent to ((())/(())) in October.
九月份产量比十月份多(1/5)，九月份的产量相当于十月份的((())/(()))．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>