This year's output is 120% of last year's. How much is this year's output higher than last year's?
今年的产量是去年的120%，今年的产量比去年增产多少．
<gadget id="calculator">120 / 100</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(6/5) - 1</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>