The ratio of the number of male and female students is 2:3, so how much more female students than male students?
男、女学生人数的比是2：3，那么女学生人数比男学生多多少．
<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>