FHH
       ----------
RXJRMR ) HJUMUHRQ
        -TQJUQF
         ======
          MURTQR
         -UMRJMH
          ======
           GJFXTQ
          -UMRJMH
           ======
           RQXQHH

base: 10
symbols: FGHJMQRTUX
difficulty: intermediate
restrictions: no multiplication