Of course. To multiply these two large numbers exactly, we need to use a method that avoids the rounding errors of standard calculators. This can be done with a computational tool capable of arbitrary-precision arithmetic or by using algebraic expansion.

Let's define the two numbers:
`A = 123,456,789,123,456,789`
`B = 987,654,321,987,654,321`

### The Direct Result

The exact product of `A` and `B` is:

**121,932,631,356,499,99
