The ratio of the number of male students to female students in the fifth grade is 8:5, the number of female students is much smaller than the number of male students.
五年级男同学与女同学人数的比是8：5，女同学人数比男同学人数少多少．
<gadget id="calculator">8 - 5</gadget>
<output>3</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>