What is the paypack period if initial investemnet is $-$$$3700\mathrm{.}00.$ Cash Flow for seven years as follow: year $1$ $$2,100\mathrm{.}00,$ year $2$ $$1,575\mathrm{.}00,$ year $3$ $$525\mathrm{.}00,$ year $4$ $$157\mathrm{.}00$ year $5$ $$122\mathrm{.}50,$ year $6$ $$$0\mathrm{.}00,$ year $7$ $$0\mathrm{.}00.$ What is the Net Present Value with a dicount rate of $10\mathrm{.}0\%?$