The Roman numeral "CCCXXVI" represents the number 326. In this numeral, "CCC" stands for 300, "XX" represents 20, and "VI" signifies 6. When combined, these values total 326. Roman numerals are often used in various contexts, such as clock faces, book chapters, and historical events. Roman numerals originated in ancient Rome and were widely used throughout the Roman Empire. They are based on combinations of letters from the Latin alphabet, specifically I, V, X, L, C, D, and M. Although less common today, they still appear in certain formal settings and cultural references.