please help me solve these two similar problems and PLEASE explain in detail how you calculated the cumulative cash flow as I am struggling with that. Thank you so much!

(Discounted payback period) You are considering a project with the following free cash flows. If the appropriate discount rate is 10 percent, what is the project's discounted payback period? The project's discounted payback period is years. (Round to two decimal places) - X Data table (Click on the following icon in order to copy its contents into a spreadsheet) PROJECT YEAR CASH FLOW 0 -550,000 20,000 2 20,000 3 20,000 20.000 1 UN 4 (Discounted payback period) Gio's Restaurants is considering a project with the following expected free cash flows. If the project's appropriate discount rate is 11 percent, what is the project's discounted payback period? The project's discounted payback period is years. (Round to two decimal places.) - X Data table (Click on the following icon in order to copy its contents into a spreadsheet.) YEAR 0 1 2 3 4 PROJECT CASH FLOW -$120 million 85 million 80 million 80 million 90 million