Talen 3521 till 3527 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 3521 | = | MMMDXXI | = | 1000 + 1000 + 1000 + 500 + 10 + 10 + 1 |
| 3522 | = | MMMDXXII | = | 1000 + 1000 + 1000 + 500 + 10 + 10 + 1 + 1 |
| 3523 | = | MMMDXXIII | = | 1000 + 1000 + 1000 + 500 + 10 + 10 + 1 + 1 + 1 |
| 3524 | = | MMMDXXIV | = | 1000 + 1000 + 1000 + 500 + 10 + 10 + 5 − 1 |
| 3525 | = | MMMDXXV | = | 1000 + 1000 + 1000 + 500 + 10 + 10 + 5 |
| 3526 | = | MMMDXXVI | = | 1000 + 1000 + 1000 + 500 + 10 + 10 + 5 + 1 |
| 3527 | = | MMMDXXVII | = | 1000 + 1000 + 1000 + 500 + 10 + 10 + 5 + 1 + 1 |