There are 78 roosters in one room of Huayu Chicken Farm, and 6 times as many hens as roosters. How many chickens are there in this room?
华誉养鸡场一房内有公鸡78只，母鸡只数是公鸡的6倍，这个房内共有多少只鸡？
<gadget id="calculator">78 * 6</gadget>
<output>468</output>

<gadget id="calculator">468 + 78</gadget>
<output>546</output>

<result>546</result>