| 231 | x | 1 | = | 231 |
| 231 | x | 2 | = | 462 |
| 231 | x | 3 | = | 693 |
| 231 | x | 4 | = | 924 |
| 231 | x | 5 | = | 1155 |
| 231 | x | 6 | = | 1386 |
| 231 | x | 7 | = | 1617 |
| 231 | x | 8 | = | 1848 |
| 231 | x | 9 | = | 2079 |
| 231 | x | 10 | = | 2310 |
| 231 | x | 11 | = | 2541 |
| 231 | x | 12 | = | 2772 |
| 231 | x | 13 | = | 3003 |
| 231 | x | 14 | = | 3234 |
| 231 | x | 15 | = | 3465 |
| 231 | x | 16 | = | 3696 |
| 231 | x | 17 | = | 3927 |
| 231 | x | 18 | = | 4158 |
| 231 | x | 19 | = | 4389 |
| 231 | x | 20 | = | 4620 |