I can actually do it quicker by hand. I just use the computer to store things, keep records etc. Beats having notebooks and papers laying around
I think you at least need to set up a spreadsheet or something to add up your plays. Very simple to do with programs like Word or Excel or similar
One thing I have to do by hand is horses. Even if I can get all my speed figures on the PC I end up with pages and pages of printouts. I think that is just to hard to see all that info on a computer screen.