template <typename T>
Matrix<T, 0, 0> operator*(const Matrix<T, 0, 0> &m1, const Matrix<T, 0, 0> &m2)
{
    if (m1.numberOfColumns() != m2.numberOfRows())
    {
        throw MatrixException();
    }
    Matrix<T, 0, 0> ans(Uninitialized{}, m1.numberOfRows(), m2.numberOfColumns());
    for (int i = 1; i <= m1.numberOfRows(); i++)
    {
        for (int j = 1; j <= m2.numberOfColumns(); j++)
        {
            T tmp{};
            for (int k = 1; k <= m1.numberOfColumns(); k++)
            {
                tmp += m1(i, k) * m2(k, j);
            }
            ans(i, j) = tmp;
        }
    }
    return ans;
}