60 | X | 1 | = | 60 |
60 | X | 2 | = | 120 |
60 | X | 3 | = | 180 |
60 | X | 4 | = | 240 |
60 | X | 5 | = | 300 |
60 | X | 6 | = | 360 |
60 | X | 7 | = | 420 |
60 | X | 8 | = | 480 |
60 | X | 9 | = | 540 |
60 | X | 10 | = | 600 |
60 | X | 11 | = | 660 |
60 | X | 12 | = | 720 |
60 | X | 13 | = | 780 |
60 | X | 14 | = | 840 |
60 | X | 15 | = | 900 |
60 | X | 16 | = | 960 |
60 | X | 17 | = | 1020 |
60 | X | 18 | = | 1080 |
60 | X | 19 | = | 1140 |
60 | X | 20 | = | 1200 |