Your math is utterly dubious here. 2 million employees? But you're counting everyone... including store managers and back office people who are probably already pulling more than $15/hr. You also claim "$99 million per 8 hour day" yet many of their employees don't work 40 hour weeks.
Basically you've cherry picked your math to make it look as egregious as possible.
Try reading the rest of the article as well instead of cherrypicking.