Girls are 1.2 times that of boys, how much more are girls than boys?
女生是男生的1.2倍，女生比男生多百分之多少？
<gadget id="calculator">1.2 - 1</gadget>
<output>0.2</output>

<gadget id="calculator">0.2 / 1</gadget>
<output>0.2</output>

<result>0.2</result>