The ratio of boys to girls in a class is 6:5, how much less girls than boys
一个班级男生与女生的比是6：5，女生比男生少多少
<gadget id="calculator">6 - 5</gadget>
<output>1</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<result>1/6 = around 0.166667</result>