Number A is 120% of Number B, so how much more Number A is than Number B?
甲数是乙数的120%，那么甲数比乙数多多少．
<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>