It's already an Arabic numeral
That is not a valid Roman numeral.
In todays terms: LXXXIX
14 x 89 = 1,246
No, according to the rules of writing Roman numerals while it is allowable for a single X to preceed L or C two or more numerals should not preceed a numeral of higher value. The correct way to write 89 as a Roman numeral is LXXXIX
8900 + 14 = 8914
It's already an Arabic numeral
That is not a valid Roman numeral.
89
In todays terms: LXXXIX
14 x 89 = 1,246
14 is 89% of 15.73 (rounded)
No, according to the rules of writing Roman numerals while it is allowable for a single X to preceed L or C two or more numerals should not preceed a numeral of higher value. The correct way to write 89 as a Roman numeral is LXXXIX
14/89 is already in simplest form
89
The date 28-07-89 can be written in Roman numerals as XXVIII.VII.LXXXIX or you could write 28-07-1989 as XXVIII.VIII.MCMLXXXIX
89 i - 1 x - 10 l - 50 50+10+10+10+(10-1) = 89