| 50000 | = | ( | 150 | + | z | ) | × | 157 50 | ( | z | ÷ | 9 | ) |
| Right side of the equation = | 150 | × | 157 50 | ( | z | ÷ | 9 | ) | + | z | × | 157 50 | ( | z | ÷ | 9 | ) |
| = | 471 | ( | z | ÷ | 9 | ) | + | z | × | 157 50 | ( | z | ÷ | 9 | ) |
| = | 471 | z | ÷ | 9 | + | z | × | 157 50 | ( | z | ÷ | 9 | ) |
| = | 157 3 | z | + | z | × | 157 50 | ( | z | ÷ | 9 | ) |
| = | 157 3 | z | + | z | × | 157 50 | z | ÷ | 9 |
| = | 157 3 | z | + | z | × | 157 450 | z |
| 50000 | = | 157 3 | z | + | z | × | 157 450 | z |