Therefore, we can attribute the following:
Total Loss = 1,892 Million
Income/Loss without Zune and Windows Mobile (from assumption) = $1,692 Million
If we strip out RROD Charge (1.06 Billion) then:
Loss = 686 Million
Therefore, with the original assumptions, the XBox Platform (including PC Games) lost $686 Million.
We can even break it down more as follows:
Operating Income/Loss:
XBox Console = ??
XBox Games and Development = ??
PC Games = ??
XBox Accessories = ??
XBox Live = ??
You can make certain assumptions - but the total has to be equal to $686 Million Loss - in this example.