If the number of boys in a class of grade six accounts for (5/9) of the whole class, then the number of girls accounts for ((())/(())), and the number of boys accounts for the number of girls.
六年级某班男生人数占全班人数的(5/9)，那么女生人数占全班人数的((())/(()))，男生人数占女生人数的多少．
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">1 - (5/9)</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(5/9) / (4/9)</gadget>
<output>5/4 = around 1.25</output>

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