An asset used in a four-year project falls in the five-year MACRS class (MACRS Table) for tax purposes. The asset has an acquisition cost of $8,400,000 and will be sold for $2,100,000 at the end of the project. If the tax rate is 21 percent, what is the aftertax salvage value of the asset? (Do not round intermediate calculations and round your answer to the nearest whole number, e.g., 32.)