The Roman numeral MDCXXX corresponds to the Arabic number 1630.
MDCXXX = 1630
Symbols are written and read from left to right, from highest to lowest.
If number MDCXXX is within to text or sentence it should be read in its equivalent in Arabic numbers, in this case 1630.
MDCXXIX is number 1629
MDCXXXI is number 1631
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