| ( | 666000 | − | 231 500 | x | ) | = | 19 500 | × | 99 20 | x |
| Left side of the equation = | 666000 | − | 231 500 | x |
| 666000 | − | 231 500 | x | = | 19 500 | × | 99 20 | x |
| Right side of the equation = | 1881 10000 | x |
| 666000 | − | 231 500 | x | = | 1881 10000 | x |
| - | 231 500 | x | − | 1881 10000 | x | = | - | 666000 |
| - | 6501 10000 | x | = | - | 666000 |
| 666000 | = | 6501 10000 | x |
6501 10000 | x | = | 666000 |
| x | = | 666000 | ÷ | 6501 10000 |
| = | 666000 | × | 10000 6501 |
| = | 222000 | × | 10000 2167 |
| x | = | 2220000000 2167 |
| x | = | 1024457.775727 |