Answer: mmdl

AnswerCrossword Clue
MMDL

LI x L

MMDL

CCLV x X

MMDL

2550, in old Rome

MMDL
2550, to Caesar
MMDL
Ten times CCLV
MMDLCato's 2550
MMDLDX x V
MMDLLivy's 2,550