| 256 | a | × | 3204 | + | 221 | a | × | 6480 | + | 203 | a | × | 11052 | + | 168 | a | × | 12852 | = | 446275 |
| Left side of the equation = | 820224 | a | + | 1432080 | a | + | 2243556 | a | + | 2159136 | a | + | 1699968 | a |
| = | 8354964 | a |
| 8354964 | a | = | 446275 |
| a | = | 446275 | ÷ | 8354964 |
| = | 446275 | × | 1 8354964 |
| a | = | 446275 8354964 |
| a | = | 0.053414 |