Ignore any negative sign for now.
\[9189\times 5172\]
Use the algorithm method.
| | | | | 9 | 1 | 8 | 9 |
| × | | | | | 5 | 1 | 7 | 2 |
|
| | | | 1 | | 1 | 1 | |
| | | | 1 | 8 | 3 | 7 | 8 |
| | | 6 | 1 | 6 | 6 | | |
| | | 6 | 4 | 3 | 2 | 3 | 0 |
| | | 9 | 1 | 8 | 9 | 0 | 0 |
| 4 | | 4 | 4 | | | | |
| 4 | 5 | 9 | 4 | 5 | 0 | 0 | 0 |
|
| | 2 | 1 | 2 | 1 | 1 | | |
| 4 | 7 | 5 | 2 | 5 | 5 | 0 | 8 |
Now consider the signs. One number is positive, and the other number is negative. Therefore, the result will be negative.
\[-9189,5172 \rightarrow \text{Negative}\]
Therefore, \(-9189\times 5172=-47525508\).
\[-47525508\]
-47525508
