I have been on this site for a while and I have noticed that some people request some help figuring out how a formula is worked out in Excel. In 2010 (and I beleive in 2007) there is actually a helper for this.
If the formula is not creating errors you can click on the cell then click on the Formula tab and then the under the Formula auditing group....there is an Evaluate Formula button...then just click Evaluate. Closely watch the underscore and it will "walk" through what Excel is "Thinking" when figuring out your formula....I find this great for finding logic errors...I'm the forum guru's know about this but I haven't seen nor could I find anything on this subject....of course, that's not to say it's not there....I hope this helps.....
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