For example, let's say that I have an invoice for 1000 CUA (Currency A) and the exchange rate is 1 CUA = 20.20 CUB (Currency B). So I make 10 payments of 2019.90 CUB
| # | Payment (CUB) | Payment (CUA) | Balance |
|---|---|---|---|
| 0 | 1000.00 | ||
| 1 | 2019.90 | 100.00 | 900.00 |
| 2 | 2019.90 | 100.00 | 800.00 |
| 3 | 2019.90 | 100.00 | 700.00 |
| 4 | 2019.90 | 100.00 | 600.00 |
| 5 | 2019.90 | 100.00 | 500.00 |
| 6 | 2019.90 | 100.00 | 400.00 |
| 7 | 2019.90 | 100.00 | 300.00 |
| 8 | 2019.90 | 100.00 | 200.00 |
| 9 | 2019.90 | 100.00 | 100.00 |
| 10 | 2019.90 | 100.00 | 0.00 |
| Σ | 20199.00 | 1000.00 |
1000.00 CUA is 20200.00 CUB but total payments were only 20199.00 CUB
