Average of 3 long integers

Question

I have 3 very large signed integers.

long x = long.MaxValue;
long y = long.MaxValue - 1;
long z = long.MaxValue - 2;

I want to calculate th

Answer 1

Try this:

long n = Array.ConvertAll(new[]{x,y,z},v=>v/3).Sum()
     +  (Array.ConvertAll(new[]{x,y,z},v=>v%3).Sum() / 3);