YWX
      ---------
YPWQY ) PJFLWPL
       -LLYWJ
        =====
        FXXMYP
       -FWLPMY
        ======
         YQFQLL
        -YYFELW
         ======
          FEYMM

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