Răspuns :
MDLX → 1 560 ( M + D + LX = 1000 + 500 + 60 )
CDXL → 440
CLXXII → 172
DCCCXXI → 821 ( D + 3 × C + 2 × X + I = 500 + 3 × 100 + 2 × 10 + 1 )
MXL → 1 040 ⇔ M + XL = 1 000 + ( 50 - 10 ) = 1 000 + 40
MMCDII → 2 402
MMV → 2 005
MCCC → 1 300
MDLX → 1 560 ( M + D + LX = 1000 + 500 + 60 )
CDXL → 440
CLXXII → 172
DCCCXXI → 821 ( D + 3 × C + 2 × X + I = 500 + 3 × 100 + 2 × 10 + 1 )
MXL → 1 040 ⇔ M + XL = 1 000 + ( 50 - 10 ) = 1 000 + 40
MMCDII → 2 402
MMV → 2 005
MCCC → 1 300