If the average age of three people is 22 years old. The youngest is no less than 18 years old. So what is the maximum age possible.
如果三个人的平均年龄为22岁．年龄最小的没有小于18岁．那么最大年龄可能是多少岁．
<gadget id="calculator">22 * 3</gadget>
<output>66</output>

<gadget id="calculator">19 * 2</gadget>
<output>38</output>

<gadget id="calculator">66 - 38</gadget>
<output>28</output>

<result>28</result>