| 840 | X | 1 | = | 840 |
| 840 | X | 2 | = | 1680 |
| 840 | X | 3 | = | 2520 |
| 840 | X | 4 | = | 3360 |
| 840 | X | 5 | = | 4200 |
| 840 | X | 6 | = | 5040 |
| 840 | X | 7 | = | 5880 |
| 840 | X | 8 | = | 6720 |
| 840 | X | 9 | = | 7560 |
| 840 | X | 10 | = | 8400 |
| 840 | X | 11 | = | 9240 |
| 840 | X | 12 | = | 10080 |
| 840 | X | 13 | = | 10920 |
| 840 | X | 14 | = | 11760 |
| 840 | X | 15 | = | 12600 |
| 840 | X | 16 | = | 13440 |
| 840 | X | 17 | = | 14280 |
| 840 | X | 18 | = | 15120 |
| 840 | X | 19 | = | 15960 |
| 840 | X | 20 | = | 16800 |