Is there a value to using Roman numerals today (beyond the 12 on a clock)? If the Roman numeral system was so good, why did Rome fail? Asking for a friend.
Traditional finance, accounting and banking uses "M" to signify thousands instead of the "K" which is prevalent in popular culture. To signify a million, you'd use "MM" (a thousand thousand), so 5M would be 5,000 and 5MM would be 5 million.
