Tabla del 640
| 640 | X | 1 | = | 640 |
| 640 | X | 2 | = | 1280 |
| 640 | X | 3 | = | 1920 |
| 640 | X | 4 | = | 2560 |
| 640 | X | 5 | = | 3200 |
| 640 | X | 6 | = | 3840 |
| 640 | X | 7 | = | 4480 |
| 640 | X | 8 | = | 5120 |
| 640 | X | 9 | = | 5760 |
| 640 | X | 10 | = | 6400 |
| 640 | X | 1 | = | 640 |
| 640 | X | 2 | = | 1280 |
| 640 | X | 3 | = | 1920 |
| 640 | X | 4 | = | 2560 |
| 640 | X | 5 | = | 3200 |
| 640 | X | 6 | = | 3840 |
| 640 | X | 7 | = | 4480 |
| 640 | X | 8 | = | 5120 |
| 640 | X | 9 | = | 5760 |
| 640 | X | 10 | = | 6400 |