| 5 | ÷ | 6679 50 | + | 3 | ÷ | 45 | + | 3 | ÷ | 53 | + | 3 | ÷ | 307 10 | + | X | ÷ | 447 10 | + | ( | 66 | − | X | ) | ÷ | 2000 | = | 589 1000 |
| Left side of the equation = | 250 6679 | + | 1 15 | + | 3 53 | + | 30 307 | + | X | × | 10 447 | + | ( | 66 | − | X | ) | × | 1 2000 |
| = | 421254794 1630110135 | + | 10 447 | X | + | ( | 66 | − | X | ) | × | 1 2000 |
421254794 1630110135 | + | 10 447 | X | + | ( | 66 | − | X | ) | × | 1 2000 | = | 589 1000 |
| Left side of the equation = | 421254794 1630110135 | + | 10 447 | X | + | 66 | × | 1 2000 | − | X | × | 1 2000 |
| = | 421254794 1630110135 | + | 10 447 | X | + | 33 1000 | − | X | × | 1 2000 |