$$ \text{Results} = { {(1 + r)} \times P \Bigl[ {{{(1 + r)} ^ {n} - 1} \over {r}} \Bigr] } $$
Future Value of Annuity Due, FVAD
$$ \text{Results} = { {(1 + r)} \times P \Bigl[ {{{(1 + r)} ^ {n} - 1} \over {r}} \Bigr] } $$
Future Value of Annuity Due, FVAD