First off, you should consider whether or not you can separate the numbers individually before attempting to get the number to convert to roman numeral.
Trying to convert the whole number is rather difficult, since the roman numeral rules don’t apply to normal numbers.
For example: Given the number 15729. Are you able to separate them and print them out one number at a time. 1 5 7 2 9. If not, try doing this first. This will help you determine the final roman numeral based on their positions. (Position meaning, their place value.)
Next analyze the roman numeral problem. The biggest hint is on the “Roman Numeral” link provided in the challenge. It shows you a picture of how it breaks down the problem.
I think I’ve given you enough hints already. LOL