Tabla del -420
| -420 | X | 1 | = | -420 |
| -420 | X | 2 | = | -840 |
| -420 | X | 3 | = | -1260 |
| -420 | X | 4 | = | -1680 |
| -420 | X | 5 | = | -2100 |
| -420 | X | 6 | = | -2520 |
| -420 | X | 7 | = | -2940 |
| -420 | X | 8 | = | -3360 |
| -420 | X | 9 | = | -3780 |
| -420 | X | 10 | = | -4200 |
| -420 | X | 1 | = | -420 |
| -420 | X | 2 | = | -840 |
| -420 | X | 3 | = | -1260 |
| -420 | X | 4 | = | -1680 |
| -420 | X | 5 | = | -2100 |
| -420 | X | 6 | = | -2520 |
| -420 | X | 7 | = | -2940 |
| -420 | X | 8 | = | -3360 |
| -420 | X | 9 | = | -3780 |
| -420 | X | 10 | = | -4200 |