A horse can be exchanged for 8 cats, a cat can be exchanged for 4 rabbits, how many rabbits can be exchanged for a horse.
一匹马换8只猫，1只猫换4只兔，一匹马可以换多少只兔．
<gadget id="calculator">4 * 8</gadget>
<output>32</output>

<result>32</result>