| 3971660000 | = | 92 5 | × | 1520 | x | ( | 1385 | − | x | ÷ | 2 | ) |
| Right side of the equation = | 27968 | x | ( | 1385 | − | x | ÷ | 2 | ) |
| 3971660000 | = | 27968 | x | ( | 1385 | − | x | ÷ | 2 | ) |
| Right side of the equation = | 27968 | x | × | 1385 | − | 27968 | x | x | ÷ | 2 |
| = | 38735680 | x | − | 13984 | x | x |
| 3971660000 | = | 38735680 | x | − | 13984 | x | x |