Roman numerals are a numeral system originating from ancient Rome. They use combinations of letters from the Latin alphabet: I, V, X, L, C, D, and M. Each letter represents a specific value, with I for 1, V for 5, X for 10, L for 50, C for 100, D for 500, and M for 1000. Numbers are formed by combining these letters, adding their values when placed in descending order and subtracting when in ascending order. This system was widely used throughout the Roman Empire for various purposes, including trade, clock faces, and numbering pages in books. Although less common today, Roman numerals are still used in certain contexts, such as the naming of monarchs and popes, as well as in the titles of movies and events, like the Super Bowl.