D6BD
      +---------
10191 | 050429DF
       -10191
        =====
        C2C0E9
       -C705AF
        ======
         DE86BD
        -D14F04
         ======
           5BF0F
          -10191
           =====
           BF232

base: 16
letters: 0123456789ABCDEF
difficulty: medium
missing: 3