B500
      +---------
3AC34 | 0468CAD5
       -AD9CB
        =====
        41165A
       -40A4C5
        ======
         DEF1DD
        -DBC270
         ======
          DED5C5
         -DBC270
          ======
           B2000

base: 16
letters: 0123456789ABCDEF
difficulty: hard
hints: A != 0