Talen 577 till 583 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 577 | = | DLXXVII | = | 500 + 50 + 10 + 10 + 5 + 1 + 1 |
| 578 | = | DLXXVIII | = | 500 + 50 + 10 + 10 + 5 + 1 + 1 + 1 |
| 579 | = | DLXXIX | = | 500 + 50 + 10 + 10 + 10 − 1 |
| 580 | = | DLXXX | = | 500 + 50 + 10 + 10 + 10 |
| 581 | = | DLXXXI | = | 500 + 50 + 10 + 10 + 10 + 1 |
| 582 | = | DLXXXII | = | 500 + 50 + 10 + 10 + 10 + 1 + 1 |
| 583 | = | DLXXXIII | = | 500 + 50 + 10 + 10 + 10 + 1 + 1 + 1 |