| ( | ( | 353866 5 | + | a | + | 10000 | ) | − | 40000 | ) | × | 10 100 | − | 2520 | = | 5366 5 | + | a |
| Left side of the equation = | ( | 353866 5 | + | a | + | 10000 | ) | × | 10 100 | − | 40000 | × | 10 100 | − | 2520 |
| = | ( | 353866 5 | + | a | + | 10000 | ) | × | 10 100 | − | 4000 | − | 2520 |
| = | ( | 353866 5 | + | a | + | 10000 | ) | × | 10 100 | − | 6520 |
| = | 353866 5 | × | 10 100 | + | a | × | 10 100 | + | 10000 | × | 10 100 | − | 6520 |
| = | 176933 25 | + | a | × | 10 100 | + | 1000 | − | 6520 |
| = | 38933 25 | + | 10 100 | a |
38933 25 | + | 10 100 | a | = | 5366 5 | + | a |
10 100 | a | − | a | = | 5366 5 | − | 38933 25 |
| - | 9 10 | a | = | 5366 5 | − | 38933 25 |
| - | 9 10 | a | = | - | 12103 25 |
12103 25 | = | 9 10 | a |
9 10 | a | = | 12103 25 |
| a | = | 12103 25 | ÷ | 9 10 |
| = | 12103 25 | × | 10 9 |
| = | 12103 5 | × | 2 9 |
| a | = | 24206 45 |
| a | = | 537.911111 |