The number of boys in Class 1 is 125% of that of girls, how much more boys than girls.
六1班男生人数是女生的125%，男生人数比女生多多少．
<gadget id="calculator">125 / 100</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/4) - 1</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>