Is the 8th of the next month the repayment period?
If you are overdrafted, you may consider applying for 6-month installment payment.
If you start repaying on the 15th of next month, it seems that the repayment period has passed. The first payment needs to be made before the 8th.
If these circumstances are not considered for the time being, there will be 741 interest in October and 814 interest in November:
Number of principal repayment days and interest due Amount Actual repayment remaining outstanding
5000.00 June 15th 45 112.50 5112.50 1000.00 4112.50
4112.50 July 15th 75 154.22 4266.72 1000.00 3266.72
326 6.72 8 September 15th 106 173.14 3439.86 1000.00 2439.86
2439.86 September 15th 137 167.13 2606.99 1000.00 1606.99
1606.99 October 15th 167 134.18 1741.17 1000.00 741.17
741.17 November 15th 198 73.38 814.55 1000.00 -185.45