9278
      +---------
69385 | 8AC759C9
       -9A162
        =====
        607B19
       - 5A129
        ======
          C1B0C
         -43894
          =====
           70269
          -B6A73
           =====
            AA44

base: 13
letters: 0123456789ABC
difficulty: intermediate
restrictions: no multiplication