Xiaohong's father is 40 years old, her mother is 39 years old, and Xiaohong is 14 years old. What is the average age of her family?
小红的爸爸40岁，妈妈39岁，小红14岁，她一家人的平均年龄是多少岁．
<gadget id="calculator">40 + 39 + 14</gadget>
<output>93</output>

<gadget id="calculator">93 / 3</gadget>
<output>31</output>

<result>31</result>