| 80000000 | + | 53246007 | X | ÷ | 177535710 | = | 17 20 | X |
| Left side of the equation = | 80000000 | + | 5916223 19726190 | X |
| 80000000 | + | 5916223 19726190 | X | = | 17 20 | X |
5916223 19726190 | X | − | 17 20 | X | = | - | 80000000 |
| - | 21702077 39452380 | X | = | - | 80000000 |
| 80000000 | = | 21702077 39452380 | X |
21702077 39452380 | X | = | 80000000 |
| X | = | 80000000 | ÷ | 21702077 39452380 |
| = | 80000000 | × | 39452380 21702077 |
| X | = | 3156190400000000 21702077 |