Amazon is considering adding a fleet of drones to its company. These drones cost $\backslash (\backslash$$ $3,000\backslash )$ each. Each drone is expected to generate an annual revenue of $\backslash (\backslash$$ $800\backslash )$ and has a useful life of $5$ years. After $5$ years of operation, it has negligible salvage value. What is the external rate of return for each drone? Assume Amazon's MARR is $\backslash (13\backslash \%\backslash ).$ Click here to access the TVM Factor Table calculator. $\backslash \%$ Carry all interim calculations to $5$ decimal places and then round your final answer to $1$ decimal place. The tolerance is $\backslash (\backslash$pm $0\mathrm{.}2\backslash ).$ Should Amazon invest in these drones?