When it has any of the following letters in it: M, D, C, L, X, V, I and S
86 as a roman numeral would be: LXXXVI
415 = CDXV as a Roman numeral
The Roman numeral for 2051 would be MMLI
The Roman Numeral for 347 would be CCCXLVII
2,201 written as a Roman numeral would be MMXXI.
86 as a roman numeral would be: LXXXVI
The Roman Numeral for 347 would be CCCXLVII
The Roman numeral for 2051 would be MMLI
415 = CDXV as a Roman numeral
2,201 written as a Roman numeral would be MMXXI.
That would be called a Suffix. The Prefix would be Mr., Sir. etc.
That IS the roman numeral. In Arabic numbers it would be 690.
It is: 38 = XXXVIII as a Roman numeral
1566 coverted into a Roman numeral is MDLXVI
The Roman Numeral system did not incorporate fractions.
The Roman numeral for 5 is V.
This is not a correct Roman Numeral. If it is supposed to be LXV it would be 65.