Tabla del 81
| 81 | X | 1 | = | 81 |
| 81 | X | 2 | = | 162 |
| 81 | X | 3 | = | 243 |
| 81 | X | 4 | = | 324 |
| 81 | X | 5 | = | 405 |
| 81 | X | 6 | = | 486 |
| 81 | X | 7 | = | 567 |
| 81 | X | 8 | = | 648 |
| 81 | X | 9 | = | 729 |
| 81 | X | 10 | = | 810 |
| 81 | X | 1 | = | 81 |
| 81 | X | 2 | = | 162 |
| 81 | X | 3 | = | 243 |
| 81 | X | 4 | = | 324 |
| 81 | X | 5 | = | 405 |
| 81 | X | 6 | = | 486 |
| 81 | X | 7 | = | 567 |
| 81 | X | 8 | = | 648 |
| 81 | X | 9 | = | 729 |
| 81 | X | 10 | = | 810 |