Boot camp consisted of an interesting “descending ladder” workout today. Participants did 18 exercises in the first roun

[answerhappygod]

Boot camp consisted of an interesting “descending ladder”
workout today. Participants did 18 exercises in the first round and
three less in each round after that until they did 3 exercises in
the final round. How many exercises did the participants do during
the workout? (63 for testing purposes) Write the code so that it
provides a complete, flexible solution toward counting repetitions.
Ask the user to enter the starting point, ending point and
increment (change amount).
PYTHON!!!