6. (4 points) (Ignore income taxes in this problem.) The management of Lanzilotta Corporation is considering a project that would require an investment of $263,000 and would last for 8 years. The annual net operating income from the project would be $67,000, which includes depreciation of $31,000. The scrap value of the project's assets at the end of the project would be $15,000. The payback period of the project is closest to: