QFQQ
      ----------
NUJJN ) UJFNQTQG
       -QYJJQ
        =====
        NQFNJT
       -NQRJJF
        ======
          CJFYQ
         -QYJJQ
          =====
           QFYJG
          -QYJJQ
           =====
            NYJC

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