The ratio of the number of goats to the number of sheep is 8:5, how much less sheep than goats.
山羊只数与绵羊只数的比是8：5，绵羊比山羊少多少．
<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>