There are 45 foxes and leopards. The number of foxes is four times that of leopards. How many leopards are there?
狐狸和豹共有45只，狐狸的只数是豹的4倍，豹有多少只？
<gadget id="calculator">1 + 4</gadget>
<output>5</output>

<gadget id="calculator">45 / 5</gadget>
<output>9</output>

<result>9</result>