There are 135 rabbits in the farm, twice as many sheep as rabbits, and 6 times as many chickens as sheep. How many chickens are there?
饲养场养兔135只，养羊的只数是兔的2倍，养鸡的只数是羊的6倍，养鸡多少只？
<gadget id="calculator">135 * 2 * 6</gadget>
<output>1_620</output>

<result>1_620</result>