For your clarification:
Steps to Calculate Overtime Pay
1st Step: O.T = Basic / number of working days in a month. You will get the Basic pay for one day. Now, to find out the Basic Pay for an Hour (in our concern, I use calculation for minutes), the next step is:
2nd Step: The result of the 1st step / number of working hours per day.
3rd Step: The result of the 2nd Step × number of O.T hours worked.
For example: Basic = 3500.00, Number of Days: 25, Number of working hours: 8, O.T hours = 2. Then,
3500 / 25 / 8 × 2.
Regards