I don't really know what you people are talking about: exam software? Is that like, uh, Microsoft Word that you use to type exams on?
I can type probably at least, say, 80 words per minute. I can probably write about five words per minute or something like that. It's not that I would need to type (calculate calculate) 15,000 words on an exam, but the less time I spend writing, presumably the more time I spend thinking. I can't write and talk and think and chew gum and walk and pat my head and rub my belly all at the same time.