191 10 | × | 800 | x | ( | 1492 | − | x | ÷ | 2 | ) | = | 2416000000 |
| Left side of the equation = | 15280 | x | ( | 1492 | − | x | ÷ | 2 | ) |
| 15280 | x | ( | 1492 | − | x | ÷ | 2 | ) | = | 2416000000 |
| Left side of the equation = | 15280 | x | × | 1492 | − | 15280 | x | x | ÷ | 2 |
| = | 22797760 | x | − | 7640 | x | x |
| 22797760 | x | − | 7640 | x | x | = | 2416000000 |