Calculate output for the logic in the attached spreadhseet based on user input

I am struggling a lot with this solution. I have sunk hours into this and would appreciate any help.
What I am trying to do is get the ROW 13 and ROW 18 outputs depending on inputs in ROW 2 to 5. Inputs in ROW 2 to 5 can have any value in any year. I would like to perform the calculations if the value in column U is 2 (if 1 then no action required)
I don't need ROW 10, 11, 12 separately if that is easier ...I am interested in getting the ROW 13 basically.
Anyone who can help PLEASE ?