| 2000 | + | 19 40 | P | + | 1 40 | P | × | 15687 2000 | + | 295269 40 | + | ( | 10 | P | + | 500 | ) | × | 11061 20000 | = | P | × | 15687 2000 |
| 方程左边 = | 2000 | + | 19 40 | P | + | 15687 80000 | P | + | 295269 40 | + | ( | 10 | P | + | 500 | ) | × | 11061 20000 |
| = | 375269 40 | + | 53687 80000 | P | + | ( | 10 | P | + | 500 | ) | × | 11061 20000 |
375269 40 | + | 53687 80000 | P | + | ( | 10 | P | + | 500 | ) | × | 11061 20000 | = | P | × | 15687 2000 |
| 方程左边 = | 375269 40 | + | 53687 80000 | P | + | 10 | P | × | 11061 20000 | + | 500 | × | 11061 20000 |
| = | 375269 40 | + | 53687 80000 | P | + | 11061 2000 | P | + | 11061 40 |
| = | 38633 4 | + | 496127 80000 | P |
38633 4 | + | 496127 80000 | P | = | P | × | 15687 2000 |
496127 80000 | P | − | 15687 2000 | P | = | - | 38633 4 |
| - | 131353 80000 | P | = | - | 38633 4 |
38633 4 | = | 131353 80000 | P |
131353 80000 | P | = | 38633 4 |
| P | = | 38633 4 | ÷ | 131353 80000 |
| = | 38633 4 | × | 80000 131353 |
| = | 38633 | × | 20000 131353 |
| P | = | 772660000 131353 |
| P | = | 5882.317115 |