15 | X | 1 | = | 15 |
15 | X | 2 | = | 30 |
15 | X | 3 | = | 45 |
15 | X | 4 | = | 60 |
15 | X | 5 | = | 75 |
15 | X | 6 | = | 90 |
15 | X | 7 | = | 105 |
15 | X | 8 | = | 120 |
15 | X | 9 | = | 135 |
15 | X | 10 | = | 150 |
15 | X | 11 | = | 165 |
15 | X | 12 | = | 180 |
15 | X | 13 | = | 195 |
15 | X | 14 | = | 210 |
15 | X | 15 | = | 225 |
15 | X | 16 | = | 240 |
15 | X | 17 | = | 255 |
15 | X | 18 | = | 270 |
15 | X | 19 | = | 285 |
15 | X | 20 | = | 300 |