| 21903 | P | ÷ | 99160 | + | ( | 1 | − | P | ) | ( | 27 | ÷ | 34 | × | 53 200 | + | 7 | ÷ | 34 | × | 73 200 | ) | = | ( | 19 | ÷ | 2479 | × | 93 200 | + | 2460 | ÷ | 2479 | × | 219 1000 | ) | P | + | ( | 1 | − | P | ) | × | 73 200 |
| 方程左边 = | 21903 99160 | P | + | ( | 1 | − | P | ) | ( | 27 | ÷ | 34 | × | 53 200 | + | 7 | ÷ | 34 | × | 73 200 | ) |
21903 99160 | P | + | ( | 1 | − | P | ) | ( | 27 | ÷ | 34 | × | 53 200 | + | 7 | ÷ | 34 | × | 73 200 | ) | = | ( | 19 | ÷ | 2479 | × | 93 200 | + | 2460 | ÷ | 2479 | × | 219 1000 | ) | P | + | ( | 1 | − | P | ) | × | 73 200 |
| 方程左边 = | 21903 99160 | P | + | 1 | ( | 27 | ÷ | 34 | × | 53 200 | + | 7 | ÷ | 34 | × | 73 200 | ) | − | P | ( | 27 | ÷ | 34 | × | 53 200 | + | 7 | ÷ | 34 | × | 73 200 | ) |
| = | 21903 99160 | P | + | 1 | × | 27 | ÷ | 34 | × | 53 200 | + | 1 | × | 7 | ÷ | 34 | × | 73 200 | − | P | ( | 27 | ÷ | 34 | × | 53 200 | + | 7 | ÷ | 34 | × | 73 200 | ) |
| = | 21903 99160 | P | + | 1431 6800 | + | 511 6800 | − | P | ( | 27 | ÷ | 34 | × | 53 200 | + | 7 | ÷ | 34 | × | 73 200 | ) |
| = | 21903 99160 | P | + | 971 3400 | − | P | ( | 27 | ÷ | 34 | × | 53 200 | + | 7 | ÷ | 34 | × | 73 200 | ) |
| = | 21903 99160 | P | + | 971 3400 | − | P | × | 27 | ÷ | 34 | × | 53 200 | − | P | × | 7 | ÷ | 34 | × | 73 200 |
| = | 21903 99160 | P | + | 971 3400 | − | P | × | 1431 6800 | − | P | × | 511 6800 |