CCLXXVI is the Roman numeral representation for the number 276. In the Roman numeral system, letters are used to signify values: C stands for 100, L for 50, X for 10, V for 5, and I for 1. Therefore, CCLXXVI can be broken down as 200 (CC) + 70 (LXX) + 6 (VI), which totals 276. Roman numerals, including CCLXXVI, were commonly used in ancient Rome for various purposes, such as numbering chapters in books, indicating the year of construction on buildings, and marking the hours on clocks. This numeral system is still used today in specific contexts, like the naming of monarchs and popes, such as Queen Elizabeth II.