Talen 1674 till 1680 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1674 | = | MDCLXXIV | = | 1000 + 500 + 100 + 50 + 10 + 10 + 5 − 1 |
| 1675 | = | MDCLXXV | = | 1000 + 500 + 100 + 50 + 10 + 10 + 5 |
| 1676 | = | MDCLXXVI | = | 1000 + 500 + 100 + 50 + 10 + 10 + 5 + 1 |
| 1677 | = | MDCLXXVII | = | 1000 + 500 + 100 + 50 + 10 + 10 + 5 + 1 + 1 |
| 1678 | = | MDCLXXVIII | = | 1000 + 500 + 100 + 50 + 10 + 10 + 5 + 1 + 1 + 1 |
| 1679 | = | MDCLXXIX | = | 1000 + 500 + 100 + 50 + 10 + 10 + 10 − 1 |
| 1680 | = | MDCLXXX | = | 1000 + 500 + 100 + 50 + 10 + 10 + 10 |