please show calculations with it

Cost-Volume-Profit Analysis Bright Corporation manufactures and sells searchlights. Each searchlight sells for $855. The variable cost per unit is $685. and the company's total fixed costs are $662,150. Requirement 1: Calculate the company's contribution margin per unit and the contribution margin ratio. Requirement 2: Calculate the sales in units needed for the company to break even. Requirement 3 : Calculate the sales in units needed for the company to achieve a target net operating income of $99,450, Requirement 4: Calculate the sales in units that would be needed for the company to break even if variable costs increased by $44 per unit