This year's sales are 20% higher than last year's, that is, how much is this year's sales compared to last year's
今年的销售额比去年增加20%，就是今年的销售额是去年的多少
<gadget id="calculator">20 / 100</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>