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Perform the following operations on the matrix $\begin{bmatrix} 3 & 4 & 45 \\ 7 & 9 & 105 \\ 13 & 2 & 195 \end{bmatrix}$

- Add the third row to the second row
- Subtract the third column from the first column.

The determinant of the resultant matrix is _____.

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