Tabla del -1680
| -1680 | X | 1 | = | -1680 |
| -1680 | X | 2 | = | -3360 |
| -1680 | X | 3 | = | -5040 |
| -1680 | X | 4 | = | -6720 |
| -1680 | X | 5 | = | -8400 |
| -1680 | X | 6 | = | -10080 |
| -1680 | X | 7 | = | -11760 |
| -1680 | X | 8 | = | -13440 |
| -1680 | X | 9 | = | -15120 |
| -1680 | X | 10 | = | -16800 |
| -1680 | X | 1 | = | -1680 |
| -1680 | X | 2 | = | -3360 |
| -1680 | X | 3 | = | -5040 |
| -1680 | X | 4 | = | -6720 |
| -1680 | X | 5 | = | -8400 |
| -1680 | X | 6 | = | -10080 |
| -1680 | X | 7 | = | -11760 |
| -1680 | X | 8 | = | -13440 |
| -1680 | X | 9 | = | -15120 |
| -1680 | X | 10 | = | -16800 |