263 20 | c | = | ( | 33 10 | + | c | ) | × | 198 25 |
| Right side of the equation = | 33 10 | × | 198 25 | + | c | × | 198 25 |
| = | 3267 125 | + | c | × | 198 25 |
263 20 | c | = | 3267 125 | + | 198 25 | c |
263 20 | c | − | 198 25 | c | = | 3267 125 |
523 100 | c | = | 3267 125 |
| c | = | 3267 125 | ÷ | 523 100 |
| = | 3267 125 | × | 100 523 |
| = | 3267 5 | × | 4 523 |
| c | = | 13068 2615 |
| c | = | 4.997323 |