Little Red has 108 white rabbits at home, and the number of white rabbits is three times that of black rabbits. How many black rabbits are there?
小红家养白兔108只，养白兔的只数是黑兔的3倍，养黑兔多少只？
<gadget id="calculator">108 / 3</gadget>
<output>36</output>

<result>36</result>