Mortgage calculation

I started with a vertex42 free canadian mortgage spreadsheet.
See attached, -simplified!
i need to know how much principal is paid off during the say 1 to 5 years of the mortgage.
ideally in one cell! for each scenario
Interest is just the rate times the reducing principle - or principal?
so payment less interest will be the principle each month.
Suggestions on doing this without a table for each calculation!
thanks all
tried various formulae on the internet- none worked
CUMPRINC function etc just give nonsense numbers- maybe because it is a canadian mortgage!