| ( | ( | 50000 | + | 40000 | + | 10000 | ) | X | ( | 1 | + | 10 100 | ) | X | ( | 1 | + | 6 100 | ) | ) | ÷ | 2000 | = | 0 |
| Left side of the equation = | ( | 50000 | + | 40000 | + | 10000 | ) | X | ( | 1 | + | 10 100 | ) | X | ( | 1 | + | 6 100 | ) | × | 1 2000 |
| = | 50000 | X | ( | 1 | + | 10 100 | ) | X | ( | 1 | + | 6 100 | ) | × | 1 2000 | + | 40000 | X | ( | 1 | + | 10 100 | ) | X | ( | 1 | + | 6 100 | ) | × | 1 2000 |
| = | 25 | X | ( | 1 | + | 10 100 | ) | X | ( | 1 | + | 6 100 | ) | + | 20 | X | ( | 1 | + | 10 100 | ) | X | ( | 1 | + | 6 100 | ) | + | 5 | X |
| = | 25 | X | × | 1 | X | ( | 1 | + | 6 100 | ) | + | 25 | X | × | 10 100 | X | ( | 1 | + | 6 100 | ) | + | 20 | X |
| = | 25 | X | X | ( | 1 | + | 6 100 | ) | + | 5 2 | X | X | ( | 1 | + | 6 100 | ) | + | 20 | X | ( | 1 | + | 10 100 | ) | X |
| = | 25 | X | X | × | 1 | + | 25 | X | X | × | 6 100 | + | 5 2 | X | X | ( | 1 | + | 6 100 | ) |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | ( | 1 | + | 6 100 | ) | + | 20 | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | × | 1 | + | 5 2 | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| = | 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X |
| 25 | X | X | + | 3 2 | X | X | + | 5 2 | X | X | + | 3 20 | X | X | = | 0 |