CDLXXX

CDLXXX is a Roman numeral representing the number 480. In the Roman numeral system, C signifies 100, D signifies 500, L signifies 50, and X signifies 10. The numeral is constructed by combining these symbols. Specifically, CD represents 400 (D minus C, following the subtractive principle where a smaller numeral before a larger one indicates subtraction). L represents 50, and XXX represents 30 (three tens). Therefore, CDLXXX is interpreted as 400 + 50 + 30, which equals 480. This numerical value is derived by following the standard rules of Roman numeral formation. The subtractive principle is applied to CD (400), and then the additive principle is used for L (50) and XXX (30). Roman numerals were widely used in ancient Rome and continued to be employed for various purposes, including numbering books and chapters, in historical records, and in some inscriptions, for many centuries.