603 50 | c | = | ( | 7 2 | + | c | ) | × | 797 100 |
| Right side of the equation = | 7 2 | × | 797 100 | + | c | × | 797 100 |
| = | 5579 200 | + | c | × | 797 100 |
603 50 | c | = | 5579 200 | + | 797 100 | c |
603 50 | c | − | 797 100 | c | = | 5579 200 |
409 100 | c | = | 5579 200 |
| c | = | 5579 200 | ÷ | 409 100 |
| = | 5579 200 | × | 100 409 |
| = | 5579 2 | × | 1 409 |
| c | = | 5579 818 |
| c | = | 6.820293 |