| ( | 100 | − | x | ÷ | 100 | ) | ÷ | 9 20 | − | 1 | = | - | 111111 1000000 |
| Left side of the equation = | 100 | × | 20 9 | − | x | ÷ | 100 | × | 20 9 | − | 1 |
| = | 2000 9 | − | x | × | 1 45 | − | 1 |
| = | 1991 9 | − | 1 45 | x |
1991 9 | − | 1 45 | x | = | - | 111111 1000000 |
| - | 1 45 | x | = | - | 111111 1000000 | − | 1991 9 |
| - | 1 45 | x | = | - | 1991999999 9000000 |
1991999999 9000000 | = | 1 45 | x |
1 45 | x | = | 1991999999 9000000 |
| x | = | 1991999999 9000000 | ÷ | 1 45 |
| = | 1991999999 9000000 | × | 45 |
| = | 1991999999 200000 | × | 1 |
| x | = | 1991999999 200000 |
| x | = | 9959.999995 |