NK - H e l p with Roman numerals

[Merrik Viltar Har]

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     I am doing a huge project at work and need help with roman numerals,
     and figured where else would I go but the middle ages.

     If I remember from school...

     I - 1
     V - 5
     X - 10
     L - 50
     C - 100
     D - 500
     M - 1000

     So... what are 29, 39 and 41?

     Thanks for any help.

     sofia-b