Decimal precision

Greetings,

I found Michael Kay's response to my same question here:

http://www.biglist.com/lists/xsl-list/archives/200412/msg00689.html

My problem is the same, but in Michael's response it sounds like there is a
way to get my XSLT version 2 stylesheet to use decimals correctly.  Is this
true?  If so, how is it different under version 2 than 1?

If not, then can someone please post an example of how to use the
format-number() function to sum decimals correctly?

Thanks,
Jim Neff