Suppose we are thinking about replacing an old computer with a

new one. The old one cost us $$1,580,000$; the new one will cost,

$$1,897,000.$ The new machine will be depreciated straight$-$line to

zero over its five$-$year life. It will probably be worth about

$$375,000$ after five years. The old computer is being depreciated at

a rate of $$320,000$ per year. It will be completely written off in

three years. If we don$$t replace it now, we will have to replace it

in two years. We can sell it now for $$513,000$; in two years, it

will probably be worth $$147,000.$ The new machine will save us

$$326,000$ per year in operating costs. The tax rate is $21$ percent,

and the discount rate is $8$ percent. a$-1.$ Calculate the EAC for the

the old computer and the new computer. $($A negative answer should be

indicated by a minus sign. Do not round intermediate calculations

and round your answers to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$ a$-2.$ What

is the NPV of the decision to replace the computer now? $($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$.,32\mathrm{.}16.)$