Answer: cdx

AnswerCrossword Clue
CDX

410, to Pliny

CDX

LXXXII times V

CDX

CCV doubled

CDX
Double CCV
CDX
Caesar's 410
CDXLXXXII x V
CDX80th prime Roman numeral
CDXOne-fifth of MML
CDXXLI x X
CDXNero's 410
CDXCCV x II