It is known that N=95+195+1995+...+19999999995, then, what is the sum of the digits of N.
已知N=95+195+1995+…+19999999995，那么，N的各位数字的和是多少．
<gadget id="calculator">2 * 9</gadget>
<output>18</output>

<gadget id="calculator">18 + 5 + 0</gadget>
<output>23</output>

<result>23</result>