Why is your formula referencing column U when there is no such column in the table? Your formula should be =A#*C#, where # is the row #. I would also suggest using formula fields rather than formfields for the equations. Aside from being simpler to implement, there is a long-standing bug that gives odd results when one calculation formfield is used for the input to another, such as when you try to calculate a column total for your table.
To see how to do a wide range of calculations in Word (including with relative referencing in tables), check out my Microsoft Word Field Maths Tutorial, at:
http://windowssecrets.com/forums/sho...Maths-Tutorial
or:
http://www.gmayor.com/downloads.htm#Third_party