Econmics of public programs

Suppose that the initial investment (i.e., initial outlay cost) today for a public project is $500,000. The expected project’s benefits for the next three years are (in thousands): $400, $550, and $600; the project’s annual operating cost for the corresponding years are (in thousands): $180, $200, and $300, respectively. Assume that all cash flows occur at the end of the year, except for the initial investment which is a one-time expenditure today, and that the social discount rate 10 percent. Should this project be accepted? (i.e., is this project economically viable?)