One pig can be exchanged for 3 sheep, one sheep can be exchanged for four rabbits, one rabbit can be exchanged for two chickens, and how many pigs can be exchanged for 360 chickens.
一头猪可换3只羊，1只羊可换4只兔，1只兔可换2只鸡，360只鸡可换多少头猪．
<gadget id="calculator">360 / 2 / 4 / 3</gadget>
<output>15</output>

<result>15</result>