By saving the template with the formulae in-situ.
To see how to do a wide range of 'math' calculations in Word, check out my Microsoft Word Field Maths Tutorial, at:
http://windowssecrets.com/forums/sho...l=1#post320143
or
http://www.gmayor.com/downloads.htm#Third_party
Similarly, to see how to do just about every calculation you might want to do with dates in Word, check out my Microsoft Word Date Calculation Tutorial, at:http://lounge.windowssecrets.com/ind...owtopic=249902
or
http://www.gmayor.com/downloads.htm#Third_party

Do read both documents' introductory material.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]