37D2
      +---------
8BA4A | D1D86609
       -8BA4A
        =====
        473916
       -41B7C8
        ======
         082120
        -095375
         ======
          173D29
         -14090C
          ======
           4A799

base: 14
letters: 0123456789ABCD
difficulty: hard