If a project costs $$634,802,$ and has the cash flows outlined in the table below, what is this project's payback period in years $($use two decimal places in your response$)?$

Year $1$ Year $2$ Year $3$ Year $4$ Year $5$ Year $6$ Year $7$ Year $8$

$45,45241,479148,167156,964117,700131,78816,88593,676$