86D1
      +---------
D8ED3 | 20330BA2
       -2D120
        =====
         37A9B
        -D8ED3
         =====
         6D3C1A
        -694A6D
         ======
          BC1A42
         -B083F7
          ======
           6FEA8

base: 16
letters: 0123456789ABCDEF
difficulty: medium
missing: 5