A proposed new project has projected sales of $158,100, costs of $79,980, and depreciation of $5,580. The tax rate is 33 percent. Calculate operating cash flow using the four different approaches. Requirement 1: The common calculation Approach (Do not round your intermediate calculations): Requirement 2: The Bottom-Up Approach (Do not round your intermediate calculations): Requirement 3: The Top-Down Approach (Do not round your intermediate calculations): Requirement 4: The Tax-Shield Approach (Do not round your intermediate calculations):