[Formula] Calculate debt repayments or savings with additional deposits

This formula is one that I struggled to remember until I worked on the visualisation that I'm sharing here.

I'm not sure if these visualisations will help anyone else memorise this formula and how to use it to solve these problem types, but it was helpful to make.

If you've created any similar visual explanations to clarify and/or memorise any formulas or theorems, please feel free to comment with a link if you'd like to share and help others.

Music by Kalaido→

Calculus,Algebra,Sequences,Series,Compound Interest,