If there are more boys than girls (1/4), then the number of boys is the number of girls ((())/(())).
男生人数比女生多(1/4)，那么男生人数是女生的((())/(()))．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<result>5/4 = around 1.25</result>