Matrix multiplication

Find the element that is located in the center of the resulting matrix:

$$\begin{pmatrix} 2 & -1 & 2\\ 1 & -2 & 1\\ -2 & 1 & -2 \end{pmatrix} \cdot \begin{pmatrix} 1 & -1 & 1\\ 2 & -2 & 2\\ -1 & 1 & -1 \end{pmatrix}$$ Enter the number without decimals.