Bright Corporation manufactures and sells searchlights. Each searchlight sells for $725. The variable cost per unit is $580, and the company's total fixed costs are $870,000. Requirement 1: Calculate the company's contribution margin per unit and the contribution margin ratio. $ and % 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 $72,500. Requirement 4: Calculate the sales in units that would be needed for the company to break even if variable costs increased by $58 per unit