Talen 581 till 587 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 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 |
| 584 | = | DLXXXIV | = | 500 + 50 + 10 + 10 + 10 + 5 − 1 |
| 585 | = | DLXXXV | = | 500 + 50 + 10 + 10 + 10 + 5 |
| 586 | = | DLXXXVI | = | 500 + 50 + 10 + 10 + 10 + 5 + 1 |
| 587 | = | DLXXXVII | = | 500 + 50 + 10 + 10 + 10 + 5 + 1 + 1 |