Revenue (without accounting for costs) is 12,000 * $7.95 = $95,400.
There is a fixed cost of $9,000 as well as cost of $0.85 per unit.
Total costs are $9,000 + $0.85*12,000 = $19,200.
Net profit is the revenue minus the costs.
Net profit = $95,400 - $19,200 = $76,200