25% more boys than girls, how much less girls than boys.
男生比女生多25%，则女生比男生少多少．
<gadget id="calculator">125 - 100</gadget>
<output>25</output>

<gadget id="calculator">25 / 125</gadget>
<output>1/5 = around 0.2</output>

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