27 little rabbits live in 3 rooms. According to this calculation, how many rooms are needed for 72 little rabbits?
27只小兔住3间房，照这样计算，72只小兔，需要几间房？
<gadget id="calculator">27 / 3</gadget>
<output>9</output>

<gadget id="calculator">72 / 9</gadget>
<output>8</output>

<result>8</result>