Please use excel formulas to answer:Your company has been quoted $$5\mathrm{.}5$ million for a new cyber defense system. The new program will likely protect the company for $6$ years and then need to be replaced as technology improves. Using sophisticated detection skills, they determine that your company$$s website faces approximately $1,800$ cyber security incidences a day, $365$ days a year. They also estimate that $1$ in $750$ attacks are successful, and the cost of the average attack is $$1,585$ due to lost merchandise, notification of the customers affected and time spent by employees following up on the incidents. Using a $5$ years MACRS schedule, a tax rate of $21\%$ and a cost of operation of $$30,000$ a year to monitor the system, should you buy the system? Your company estimates its cost of capital is $7\mathrm{.}5\%.$ Calculate the payback period, discounted payback period, and the NPV$.$