John, we've said it twice. I still think they are not listening. My only other suggestion would be to look at some dimensional analysis -- really a simple concept -- which just converts units, starting with any given quantity (number and units). All the examples above are correct, BUT the statement that the formula 'just don't make sense' is not the formula's fault - just the user's not understanding the formula. Which is what happens a lot when we are all talking different languages...and mathematics is the purest, most unambiguous language of all.

(If this argument continues, I'll find my favorite example of right brain problem solving -- very hard for verbal, linear thinkers to solve.)