| P | ( | 1 | + | 17 20 | ÷ | 21 20 | ) | = | 3 20 | ( | 25000 | + | 50000 | ÷ | 21 20 | − | P | ) | + | 17 20 | ( | 3 20 | ( | 50000 | + | 50000 | ) | + | 17 20 | × | 50000 | ÷ | 21 20 | ) |
| Left side of the equation = | P | × | 1 | + | P | × | 17 20 | ÷ | 21 20 |
| = | P | × | 1 | + | P | × | 17 21 |
| = | 38 21 | P |
38 21 | P | = | 3 20 | ( | 25000 | + | 50000 | ÷ | 21 20 | − | P | ) | + | 17 20 | ( | 3 20 | ( | 50000 | + | 50000 | ) | + | 17 20 | × | 50000 | ÷ | 21 20 | ) |
| Right side of the equation = | 3 20 | × | 25000 | + | 3 20 | × | 50000 | ÷ | 21 20 | − | 3 20 | P | + | 17 20 | ( | 3 20 | ( | 50000 | + | 50000 | ) | + | 17 20 | × | 50000 | ÷ | 21 20 | ) |
| = | 3750 | + | 50000 7 | − | 3 20 | P | + | 17 20 | ( | 3 20 | ( | 50000 | + | 50000 | ) | + | 17 20 | × | 50000 | ÷ | 21 20 | ) |
| = | 76250 7 | − | 3 20 | P | + | 17 20 | ( | 3 20 | ( | 50000 | + | 50000 | ) | + | 17 20 | × | 50000 | ÷ | 21 20 | ) |
| = | 76250 7 | − | 3 20 | P | + | 17 20 | × | 3 20 | ( | 50000 | + | 50000 | ) | + | 17 20 | × | 17 20 | × | 50000 | ÷ | 21 20 |
| = | 76250 7 | − | 3 20 | P | + | 51 400 | ( | 50000 | + | 50000 | ) | + | 722500 21 |
| = | 951250 21 | − | 3 20 | P | + | 51 400 | ( | 50000 | + | 50000 | ) |
| = | 951250 21 | − | 3 20 | P | + | 51 400 | × | 50000 | + | 51 400 | × | 50000 |
| = | 951250 21 | − | 3 20 | P | + | 6375 | + | 6375 |
| = | 1219000 21 | − | 3 20 | P |
38 21 | P | = | 1219000 21 | − | 3 20 | P |
38 21 | P | + | 3 20 | P | = | 1219000 21 |
823 420 | P | = | 1219000 21 |
| P | = | 1219000 21 | ÷ | 823 420 |
| = | 1219000 21 | × | 420 823 |
| = | 1219000 | × | 20 823 |
| P | = | 24380000 823 |
| P | = | 29623.329283 |