Tabla del -680
| -680 | X | 1 | = | -680 |
| -680 | X | 2 | = | -1360 |
| -680 | X | 3 | = | -2040 |
| -680 | X | 4 | = | -2720 |
| -680 | X | 5 | = | -3400 |
| -680 | X | 6 | = | -4080 |
| -680 | X | 7 | = | -4760 |
| -680 | X | 8 | = | -5440 |
| -680 | X | 9 | = | -6120 |
| -680 | X | 10 | = | -6800 |
| -680 | X | 1 | = | -680 |
| -680 | X | 2 | = | -1360 |
| -680 | X | 3 | = | -2040 |
| -680 | X | 4 | = | -2720 |
| -680 | X | 5 | = | -3400 |
| -680 | X | 6 | = | -4080 |
| -680 | X | 7 | = | -4760 |
| -680 | X | 8 | = | -5440 |
| -680 | X | 9 | = | -6120 |
| -680 | X | 10 | = | -6800 |