There are 84 black chickens, 7 times that of white chickens. How many chickens are there in total?
黑鸡84只，是白鸡的7倍．一共有多少只鸡？
<gadget id="calculator">84 / 7</gadget>
<output>12</output>

<gadget id="calculator">12 + 84</gadget>
<output>96</output>

<result>96</result>