If I have a starting number S and an ending number E, and it can be repeated N times, what will be the final total T?
For example:
S = 3540
E = 3650
N = 8
I can calculate that each step will increase the total by ( S - E ) 110 and it can have ( N ) 8 steps.
110 * 8 = 880
3540 + 880 = 4420
I can write a function similar to:
T = S + ( ( S - E ) * N )
T = S + ( ( E - S ) * N )
and just using a calculator: subtract $S$ from $E$, then multiply that by $N$, and then add that to $S$.
Is there a proper way to do this on a calculator without having to specify $S$ twice?
Answer was deleted, reposting.