| 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> |