a retailer is looking to expand operations at all of their stores for an initial investment of $840. this investment will be depreciated on a straight line basis over the project's 10 year life. the expansion is expected to produce annual cash inflows of $620 in consecutive years over the life of the project beginning one year from today, while also producing annual cash outflows of $370 in consecutive years over the life of the project, also beginning one year from today. what is the project's npv if the corporate tax rate is 38% and the project's required rate of return is 12%?