"CCCXXX" is a Roman numeral that represents the number 330. In the Roman numeral system, "C" stands for 100, so "CCC" means 300. The "XXX" represents 30, as "X" stands for 10. When combined, these symbols indicate the total value of 330. Roman numerals are a numeral system originating from ancient Rome. They are used in various contexts today, such as on clock faces, in book chapters, and for naming monarchs and popes. Understanding Roman numerals can be helpful in interpreting historical texts and artifacts.