[Orgmode] Rounding in org-mode tables

[James Hawley]

Hi!

I'm a relatively new emacs and org-mode user so I apologize for the 
basic nature of this question. Unfortunately, the answer is probably so 
obvious that no one has had to ask it before, and, as a result, I have 
not been able to find this subject in the mailing list.  Of course, I 
may not be doing a good search, so please accept another apology.

Anyway, all I am trying to do is to sum a column of numbers in a table 
in an org file.  Here's an example:

935.15
6483.80
7419.00
#+TBLFM: @16$4=vsum(@address@hidden);%.2f

The answer is obviously being rounded but I don't want that and I 
cannot figure out the undoubtedly trivial way to stop it so I get the 
answer that I want to see - 7418.95.

Thanks for any help anyone offers on this simple (but frustrating for 
me) question.

Jim Hawley