DCXCVIII

DCXCVIII is the Roman numeral representation of the number 698. Roman numerals are a numerical system that originated in ancient Rome. The system uses letters from the Latin alphabet to denote values. The basic symbols are I (1), V (5), X (10), L (50), C (100), D (500), and M (1000).

To form larger numbers, these symbols are combined. Generally, symbols are placed from left to right in order of value, starting with the largest. For example, VI represents 6 (5 + 1). However, a smaller value symbol placed before a larger value symbol indicates subtraction. This is known as the subtractive principle. For instance, IV represents 4 (5 - 1) and XC represents 90 (100 - 10).

In the case of DCXCVIII, the components are D (500), C (100), XC (90), V (5), and III (3). When these are added together, we get 500 + 100 + 90 + 5 + 3, which equals 698. The D and C together form DC (600). The XC signifies 90, and the VIII represents 8. Therefore, DCXCVIII is 600 + 90 + 8 = 698. This numeral system was in common use throughout Europe until the late Middle Ages.