1289 10000 | ÷ | 86289 100000 | = | 128057 1000000 | ÷ | x |
| Multiply both sides of the equation by: | x |
1289 10000 | ÷ | 86289 100000 | × | x | = | 128057 1000000 |
12890 86289 | x | = | 128057 1000000 |
| x | = | 128057 1000000 | ÷ | 12890 86289 |
| = | 128057 1000000 | × | 86289 12890 |
| x | = | 11049910473 12890000000 |