| X | = | 4000 | ÷ | 11 10 | + | 4000 | ÷ | 121 100 | + | 4000 | ÷ | 1331 1000 | − | 909091 50 | − | ( | 10000 | ÷ | 11 10 | ) |
| Right side of the equation = | 40000 11 | + | 400000 121 | + | 4000000 1331 | − | 909091 50 | − | ( | 10000 | ÷ | 11 10 | ) |
| = | - | 548000121 66550 | − | ( | 10000 | ÷ | 11 10 | ) |
| X | = | - | 548000121 66550 | − | ( | 10000 | ÷ | 11 10 | ) |
| Right side of the equation = | - | 548000121 66550 | − | 10000 | ÷ | 11 10 |
| = | - | 548000121 66550 | − | 100000 11 |