5029
      +---------
85CF0 | 755F7285
       -85CF0
        =====
        5CDBA2
       -58E31F
        ======
         465698
        -4FF7AA
         ======
          D85255
         -DBA396
          ======
           AF36E

base: 16
letters: 0123456789ABCDEF
difficulty: hard