What is the paypack period if initial investemnet is

$-$$$3700\mathrm{.}00$

$$Cash Flow for seven years as follow: year

Year $1$

$$$$2100\mathrm{.}00$

year $2$

$$1575\mathrm{.}00$

$$year $3$

$$$$525\mathrm{.}00$

year $4$

$$157\mathrm{.}50$

year $5$

$$122\mathrm{.}50$

year $6$

$$0\mathrm{.}00$

year $7$

$$0\mathrm{.}00$ what is the profitability Index with a $10\mathrm{.}0\%$ discount rate?