There are 6 elderly people in the nursing home, their ages are 75, 82, 94, 85, 77, and 91. What is the average age of the elderly?
敬老院有6位老人，他们的年龄分别是75岁、82岁、94岁、85岁、77岁、91岁．老人的平均年龄是多少岁？
<gadget id="calculator">75 + 82 + 94 + 85 + 77 + 91</gadget>
<output>504</output>

<gadget id="calculator">504 / 6</gadget>
<output>84</output>

<result>84</result>