4. Given a project X, which requires an initial investment of $ 480,000 and it is expected to generate a cash inflow Reach month for 12 months. Assume that the salvage value of the project is zero. The target rate of return is 12% per annum. If a net present value (NPV) of a project is $ 645508, then calculate the monthly cash inflow R expected to be generated by the project. Justify the result. 5