"CCCXX" is a Roman numeral that represents the number 320. In the Roman numeral system, "C" stands for 100, so "CCC" means 300. The "XX" at the end adds 20, resulting in a total of 320. Roman numerals are often used in various contexts, such as clock faces, book chapters, and movie titles. The use of Roman numerals dates back to ancient Rome, where they were employed for counting and record-keeping. Today, they are still seen in modern culture, particularly in historical contexts and formal events, showcasing their enduring legacy in numeral representation.