How many chickens and rabbits are in the cage, 10 heads are counted from the top, and 34 feet are counted from the bottom, so how many rabbits are there in the cage?
笼子里有鸡和兔若干，从上面数有10个头，从下面数有34只脚，那么笼子里有兔多少只．
<gadget id="calculator">14 / 2</gadget>
<output>7</output>

<result>7</result>