Talen 1384 till 1390 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 1384 | = | MCCCLXXXIV | = | 1000 + 100 + 100 + 100 + 50 + 10 + 10 + 10 + 5 − 1 |
| 1385 | = | MCCCLXXXV | = | 1000 + 100 + 100 + 100 + 50 + 10 + 10 + 10 + 5 |
| 1386 | = | MCCCLXXXVI | = | 1000 + 100 + 100 + 100 + 50 + 10 + 10 + 10 + 5 + 1 |
| 1387 | = | MCCCLXXXVII | = | 1000 + 100 + 100 + 100 + 50 + 10 + 10 + 10 + 5 + 1 + 1 |
| 1388 | = | MCCCLXXXVIII | = | 1000 + 100 + 100 + 100 + 50 + 10 + 10 + 10 + 5 + 1 + 1 + 1 |
| 1389 | = | MCCCLXXXIX | = | 1000 + 100 + 100 + 100 + 50 + 10 + 10 + 10 + 10 − 1 |
| 1390 | = | MCCCXC | = | 1000 + 100 + 100 + 100 + 100 − 10 |