The total output value of the factory this year is 120% of last year's total output value. How much will the total output value increase this year compared with last year?
今年工厂的总产值是去年总产值的120%，今年比去年增加总产值多少．
<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>