23754
      +----------
31605 | 517675133
       -56412
        =====
         14045
        -31605
         =====
         335561
        -360504
         ======
           07373
          -01233
           =====
            25063
           -40147
            =====
             7421

base: 8
letters: 01234567
difficulty: easy
restrictions: no multiplication