@redenigma It is a difficult equation because there are so many moving parts to this.
The costs and the profits are spread out over a huge product line up for companies of this nature. It all gets figured out in balance sheets on a fiscal year basis.
This is part of the reason why it's so difficult to hold corporations to account -- we have no concept of the actual value of anything, and the realities are (intentionally) shrouded in layers of mystery.
It is a *really* good question, though!