Talen 1386 till 1392 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 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 |
| 1391 | = | MCCCXCI | = | 1000 + 100 + 100 + 100 + 100 − 10 + 1 |
| 1392 | = | MCCCXCII | = | 1000 + 100 + 100 + 100 + 100 − 10 + 1 + 1 |