You work for a nuclear research laboratory that is contemplating leasing a diagnostic scanner (leasing is a common practice with expensive, high-tech equipment). The scanner costs $4,800,000 and would be depreciated straight-line to zero over three years. Because of radiation contamination, it will actually be completely valueless in three years. You can lease it for $1,760,000 per year for three years. Assume a 24 percent tax bracket. You can borrow at 6 percent before taxes. What is the NAL of the lease from the lessor's viewpoint? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)