Talen 1577 till 1583 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1577 | = | MDLXXVII | = | 1000 + 500 + 50 + 10 + 10 + 5 + 1 + 1 |
| 1578 | = | MDLXXVIII | = | 1000 + 500 + 50 + 10 + 10 + 5 + 1 + 1 + 1 |
| 1579 | = | MDLXXIX | = | 1000 + 500 + 50 + 10 + 10 + 10 − 1 |
| 1580 | = | MDLXXX | = | 1000 + 500 + 50 + 10 + 10 + 10 |
| 1581 | = | MDLXXXI | = | 1000 + 500 + 50 + 10 + 10 + 10 + 1 |
| 1582 | = | MDLXXXII | = | 1000 + 500 + 50 + 10 + 10 + 10 + 1 + 1 |
| 1583 | = | MDLXXXIII | = | 1000 + 500 + 50 + 10 + 10 + 10 + 1 + 1 + 1 |