Mr. Chen was born 2000 years ago, and his age this year is exactly the sum of the numbers in his birth year. How old is Mr. Chen this year?
陈老师是2000年前出生的，今年的岁数刚好是他出生年份的各个数字之和，陈老师今年多少周岁了．
<gadget id="calculator">1 + 9 + 8 + 8</gadget>
<output>26</output>

<result>26</result>