The number of girls is equal to the number of boys (5/6), and the number of boys is greater than the number of girls.
女生人数是男生人数的(5/6)，男生人数比女生人数多多少．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/6) / (5/6)</gadget>
<output>1/5 = around 0.2</output>

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