| ( | 493 1000 | − | 689 500 | ) | ÷ | 3 1000 | = | ( | x | − | 689 500 | ) | ÷ | 1218677 500000000 |
| Left side of the equation = | 493 1000 | × | 1000 3 | − | 689 500 | × | 1000 3 |
| = | 493 3 | − | 1378 3 |
| = | - | 295 |
| - | 295 | = | ( | x | − | 689 500 | ) | ÷ | 1218677 500000000 |
| Right side of the equation = | x | × | 500000000 1218677 | − | 689 500 | × | 500000000 1218677 |