Just input the data required, then hit the send button to get the results. Only put numbers in the input boxes, because I haven't put any error traps in, so text entered will give odd results. This programme works out the compund interest, applied at annual or monthly intervalls according to your input, and adds it to your accumulated investment to give a final value after your given term of years.

For the purposes of the excercise, in case the purists need to know, I have assumed that monthly deposits are cleared deposits on the 1st day of the month.