Dear teacher, I don't know how to apply the calculation formula of this topic. I hope you can write the steps in detail.Thank you

Project Phase Duration (months) Manpower required Analysis 2 2.5 x Analyst Programmer Design 2.5 Build 3.5 1 x Analyst Programmer 1 x Systems Engineer 3 x Analyst Programmer 2.5 x Systems Engineer 1 x Analyst Programmer 0.5 x Systems Engineer 1 x Analyst Programmer Test 2.5 User Training 0.5 Deploy 1 1 x Analyst Programmer 1 x Systems Engineer Table 1 - Manpower resources and duration estimated for the project * One project manager is working full-time on the above project throughout the entire project duration. [i.e. The Analyst Programmer and Systems Engineer are working part-time] Positions Cost per month Project Manager $7,500 Analyst Programmer $4,000 Systems Engineer $3,000 Table 2 - Estimated Manpower Cost a. Using the estimates provided in Table 1 and Table 2, calculate the total manpower cost for project ONBOOKING SYSTEM during development. b. In addition, there is a one-time software license cost of $40,000, and hardware cost of $50,000. Calculate the total one-time development cost for project ONBOOKING SYSTEM. c. After Project ONBOOKING SYSTEM is deployed, it can be used for 5 years and the maintenance cost (inclusive of hardware, software license, and manpower) is fixed at $55,000 annually. In addition, the system is estimated to bring in $130,000 cost savings for the company per year. Calculate the total recurrent cost for the system, and the total benefits of the system for 5 years. d. Calculate the ROI for Project ONBOOKING SYSTEM, correct to 2 decimal places. 2. Table 3 shows the expected annual cost and benefits of Project HR that is expected to serve BlueMart for another 4 years after a 1 year of development program that was successfully completed recently. Expected Year 1 Year 2 Year 3 Year 4 Year 5 Benefits / Cost Expected $150,000 $160,000 $ 170,000 $180,000 Benefits Cost $200,000 $70,000 $80,000 $90,000 $100,000 Table 3: Expected Benefits and Cost of Project HR a. Calculate the Payback period for Project HR, correct to 2 decimal places. b. Calculate the Net Present Value (NPV) for Project HR, correct to 2 decimal places. The current interest rate is 4.5%