Grafton Metal Works of McDonough produces cast bronze valves on a 20-person assembly line that operates 5 days a week, 12 hours daily. The company sold 50,000 units in 2020 at $50 per unit. The variable costs per unit were $22.50. Fixed costs totaled $750,000. Calculate the following:

I need a complete breakdown of each problem so that I understand how to compute each one

Total sales for 2020 =

Total cost for 2020=

Total variable expenses =

Contribution margin per unit =

Total contribution margin =

Contribution margin ratio =

Net profit (total) =