Hello! I have an app, where a user types in each day how many hours a worker has worked for that day.

I would like to give a monthly overview of the amount of hours each worker has worked for every month. The hours will be multiplied by the hourly wage of the worker.

**For example:**

Daily inputs:

1st September 2020: Worker A = 6 hours, Worker B = 8 hours, Worker C = 7 hours

2nd September 2020: A = 7 hours, B = 8 hours, C = 9 hours

…

Total of hours worked in September 2020:

Worker A: 90 hours (to be paid: €1.800)

Worker B: 96 hours (to be paid: €1880)

Worker C: 102 hours (to be paid: €1960)

What could be an approach to get a monthly overview of the daily inputs?