We are evaluating a project that costs $$840,000,$ has a life of nine years, and has no salvage value. Assume that depreciation is straight$-$line to zero over the life of the project. Sales are projected at $81,000$ units per year. Price per unit is $$43,$ variable cost per unit is $$28,$ and fixed costs are $$842,520$ per year. The tax rate is $25$ percent, and we require a return of $14$ percent on this project. The projections given for price, quantity, variable costs, and fixed costs are all accurate to within $+/-12$ percent.

a$.$ Calculate the best$-$case NPV$.$

b$.$ Calculate the worst$-$case NPV$.$