"As Richard Lawler writes for The Verge, the division that handles ads and surveillance booked $57.3 million in profits, while the hardware division's profits w

"As Richard Lawler writes for The Verge, the division that handles ads and surveillance booked $57.3 million in profits, while the hardware division's profits were $25.6 million." I am curious how the accounting works on this, they could not make any profit on the surveillance without selling the TV's, but none of the TV cost is recorded as an expense for the surveillance numbers.