This year's sales are 30% higher than last year's, that is, this year's sales are what they were last year.
今年的销售额比去年增产30%，也就是今年的销售额是去年的多少．
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 + (3/10)</gadget>
<output>13/10 = around 1.3</output>

<result>13/10 = around 1.3</result>