Talen 1780 till 1786 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1780 | = | MDCCLXXX | = | 1000 + 500 + 100 + 100 + 50 + 10 + 10 + 10 |
| 1781 | = | MDCCLXXXI | = | 1000 + 500 + 100 + 100 + 50 + 10 + 10 + 10 + 1 |
| 1782 | = | MDCCLXXXII | = | 1000 + 500 + 100 + 100 + 50 + 10 + 10 + 10 + 1 + 1 |
| 1783 | = | MDCCLXXXIII | = | 1000 + 500 + 100 + 100 + 50 + 10 + 10 + 10 + 1 + 1 + 1 |
| 1784 | = | MDCCLXXXIV | = | 1000 + 500 + 100 + 100 + 50 + 10 + 10 + 10 + 5 − 1 |
| 1785 | = | MDCCLXXXV | = | 1000 + 500 + 100 + 100 + 50 + 10 + 10 + 10 + 5 |
| 1786 | = | MDCCLXXXVI | = | 1000 + 500 + 100 + 100 + 50 + 10 + 10 + 10 + 5 + 1 |