41378
      +----------
9A041 | 10BBB6A33
       -9A041
        =====
        606286
       -655245
        ======
         87AA7A
        -8363BA
         ======
          5134A3
         -503335
          ======
            73383
           -B4865
            =====
            49678

base: 12
letters: 0123456789AB
difficulty: easy