08A2
      +---------
42CC4 | CA876A44
       -26A13
        =====
        B48A0A
       - AA9B7
        ======
         43C444
        -485A31
         ======
          B24C94
         -B8BC8B
          ======
           45AAB

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