| 36 | × | 669 100 | + | 1199 100 | c | = | ( | 36 | + | c | ) | × | 198 25 |
| Left side of the equation = | 6021 25 | + | 1199 100 | c |
6021 25 | + | 1199 100 | c | = | ( | 36 | + | c | ) | × | 198 25 |
| Right side of the equation = | 36 | × | 198 25 | + | c | × | 198 25 |
| = | 7128 25 | + | c | × | 198 25 |
6021 25 | + | 1199 100 | c | = | 7128 25 | + | 198 25 | c |
1199 100 | c | − | 198 25 | c | = | 7128 25 | − | 6021 25 |
407 100 | c | = | 7128 25 | − | 6021 25 |
407 100 | c | = | 1107 25 |
| c | = | 1107 25 | ÷ | 407 100 |
| = | 1107 25 | × | 100 407 |
| = | 1107 | × | 4 407 |
| c | = | 4428 407 |
| c | = | 10.879607 |