When you first open the report it will be just plain static values. You can create fields that look like formulas (ie. "=A2+A3") but they will only be recognized by excel as a formula until after it has been edited. You can do this quickly by just pressing F2, then ENTER on each one. or you can paste special something to a range that won't destroy the formulas. For instance you can copy a zero length string and concatenate it to the formulas. This can also be sped up by creating a template ready to read that formula text. So you would export your report, then copy and paste all text at once.
