0662
      +---------
65A86 | 350A9634
       -65A86
        =====
        059866
       -099A82
        ======
         74A853
        -099A82
         ======
          736A04
         -7788A1
          ======
           A8397

base: 11
letters: 0123456789A
difficulty: intermediate
restrictions: no multiplication