Cheers for the responses guys, didn't expect so many
@bobchase, that's the figure I was after! Cheers!
@Pisces - as soon as I saw you post it fell into place - cheers too!
To everyone else, I personally prefer the method I use - either with a calculator or with a pen and paper. Its quite easy to work out quickly when you get the hang of it and doesn't take much time at all - believe me (many don't)
Thanks again guys,
Px3000