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Not sure if anyone still wants it, but I've uploaded it here: https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0B3l-3jb4J3CRNTg1YjJhY2MtOWUyZi00MGFmLTgxYTQtYzljNDFkZGUyZDU0&hl=en

Division is difficult to get right in arbitrary precision arithmetic, don't get discouraged.

I used the algorithm given in Knuth's "The Art of Computer Programming" Vol 2. in 4.3.1 "The Classical Algorithms" but was storing "digits" of 32 bits.

You may want to have a test program generate large dividends and divisors and compare your division result against a widely adopted library like those in muppetgnar's reply.

Gallian is a good intro:

https://www.amazon.com/Contemporary-Abstract-Algebra-Joseph-Gallian/dp/1133599702

Doesn't require to much background, but is a good intro to the subject. D&F is a great book, but feels more referency