GGXP
      ----------
GPXQP ) CQXXGMUG
       -PQCXG
        =====
        RMRMMM
       - PQCXG
        ======
         GPRMCU
        -GQRURQ
         ======
          RXUPRG
         -RPPPGR
          ======
           RCXXR

base: 8
symbols: CGMPQRUX
difficulty: intermediate
restrictions: no multiplication