古代ローマ人がカウントとしてカウントされます。
Roman Numerals was the number system that was used in ancient Rome. Once in a while you come across a number represented in this form and may not be able to quickly get what the number is. This App allows you to convert between the decimal system (the one we use today) and this ancient number sister. No need to wonder what MMXIII stands for... That's 2013 by the way.