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No they need 'сумма прописью'


Here's an example. You'll need to work with it a bit.
Add 'рублей' if the figure ends with 5,6,7,8,9,0 or 11-19.
Add 'рубля' if the figure ends with 1-4 except...

Why not use a solution that already exists? (there are many free code examples. of course the comments to the code are in Russian which complicates your problem a bit).

What programming language...

рубль (rouble) is of masculine gender
копейка (copeck) is of feminine gender

тысяча (thousand) - feminine
миллион, миллиард... etc (million, billion... etc) - masculine

first comes the...