The number of boys in class 61 of our school accounts for 5/9 of the whole class, so what percentage of the number of girls is the number of boys?
我校六1班男生人数占全班人数的(5/9)，那么女生人数占男生人数的百分之几？
<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">(4/9) / (5/9)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>