Iiiiiii,vvvi
Improved answer:
In today's terms 123,456 in Roman numerals is (CXXIII)CDLVI
123 = CXXIII
123
123
It is already in Hindu-Arabic numerals but if you mean in Roman numerals then it is written as: CXXIII
123 + 456 + 7890 = 8469
123 = CXXIII
123
123
CXXIII
123 + 456 = 579
It is already in Hindu-Arabic numerals but if you mean in Roman numerals then it is written as: CXXIII
8D Nonono, Roman Numerals were a counting system. Just like you can't make letters with 123..., you can't make letters for numerals.
123 + 456 + 7890 = 8469
one hundred twenty three (123).
123 M followed by CXXXI.Improved Answer:(CXXIII)CXXXI
456 + 789 + 123 + 123456789 = 123458157
If you mean what is 123,456,789 in Roman numerals then it probably works out as follows:- (CXXIII)M(CCCCLVI)DCCLXXXVIIII Numerals in brackets indicate multiplication by a thousand and superscript numerals indicate multiplication by the value of that particular numeral. Hence:- (CXXIII)M = 1,000*1,000*123 = 123,000,000 (CCCCLVI) = 1,000*456 = 456,000 DCCLXXXVIIII = 789