|I very strongly recommend that everyone read this long, but extremely instructive message: Msg #488879. (It's just one of several on how to look at expenses. Some get more into the details of how to come up with those numbers.)|
There will probably be three different types of reactions:
1) Wow... Eye opening! I never thought of it that way.
2) Of course! Anyone with basic business knowledge and good sense knows this.
3) [Rather than try to explain, read the post by jba/fl in the same thread with Marian's message listed above. Msg #488936. It's worth it... ]