| s | s | s | s | ( | 81 100 | s | s | + | 1 | ) | ( | 49 1000000 | s | s | + | 1 | ) | = | 1 |
| Left side of the equation = | s | s | s | s | × | 81 100 | s | s | ( | 49 1000000 | s | s | + | 1 | ) | + | s | s | s | s |
| = | s | s | s | s | × | 81 100 | s | s | × | 49 1000000 | s | s | + | s | s |
| = | s | s | s | s | × | 3969 100000000 | s | s | s | s | + | s | s | s |
| = | s | s | s | s | × | 3969 100000000 | s | s | s | s | + | s | s | s |
| = | s | s | s | s | × | 3969 100000000 | s | s | s | s | + | s | s | s |
| s | s | s | s | × | 3969 100000000 | s | s | s | s | + | s | s | s | = | 1 |