The city of Oakmont is interested in developing some lake front property into a sports park $($picnic facilities, boat docks, swimming area, etc.$).$ A consultant has estimated that the city would need to invest $\backslash (\backslash$$ $4\backslash )$ million in this project. In return, the developed property would return $\backslash (\backslash$$ $300,000\backslash )$ per year to the city through increased tax revenues and recreational benefits to the public. What would the life of this project need to be in order to be cost$-$beneficial to the city? The interest rate on municipal bonds is $\backslash (5\backslash \%\backslash )$ per year. Click the icon to view the interest and annuity table for discrete compounding when $\backslash ($ i$=5\backslash \%\backslash )$ per year. The life of the project needs to be at least years in order to be cost$-$beneficial to the city. $($Round up to the nearest whole number.$)$