CMPM
      ----------
THHXY ) RHXYPMXR
       -MHHRC
        =====
        CHTTNM
       -YRHCXM
        ======
         CTYYHX
        -CYHCRP
         ======
          CHRYPR
         -YRHCXM
          ======
           CPWTC

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