Need to count higher than 255

[skimask]

I am in a situation where I am controlling a stepper motor with a Pic and I need to count off up to 1900 stepps. Also I need to take the counted number of stepps and compare to another number to see which is higher or lower and subtract the difference. I guess I need to learn how to do natural math with Pics. For example: 1373 - 812 or whatever. I heard there are 'co-processors' but I dont know much about them. Does anybody have any ideas.
Thanks in advance,
Steve Matson

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