There is a set of numbers: 3, 5, 6, 8, 9, 22, 24, what is the average of this set of numbers.
有一组数：3、5、6、8、9、22、24，这组数的平均数是多少．
<gadget id="calculator">3 + 5 + 6 + 8 + 9 + 22 + 24</gadget>
<output>77</output>

<gadget id="calculator">77 / 7</gadget>
<output>11</output>

<result>11</result>