If the average age of four people with different ages is 32 years old, and none of them is younger than 20 years old, what is the age of the oldest among the four people?
年龄各不相等的四个人的平均年龄是32岁，且他们中没有小于20岁的，那么四个人中年龄最大的可能是多少岁．
<gadget id="calculator">32 * 4</gadget>
<output>128</output>

<gadget id="calculator">20 + 21 + 22</gadget>
<output>63</output>

<gadget id="calculator">128 - 63</gadget>
<output>65</output>

<result>65</result>