Why does it take 3 to 10 days to process results? What's stopping you from delivering results within a second? Edit: I didn't see that there was open ended res

Why does it take 3 to 10 days to process results? What's stopping you from delivering results within a second? Edit: I didn't see that there was open ended responses or a programming project on some of the exams because I was looking at the sample exam, which only has multiple choice.