\[
\left.\begin{array}{c}
\text { Properties of sections } \\
\text { [Theorems of Ceva and Menelaus] }
\end{array}\right]
\]

Point \( M \) is the midpoint of edge \( AD \) of tetrahedron \( ABCD \). Point \( N \) lies on the extension of edge \( AB \) beyond point \( B \), and point \( K \) lies on the extension of edge \( AC \) beyond point \( C \), such that \( BN = AB \) and \( CK = 2AC \). Construct the section of the tetrahedron by plane \( MNK \). In what ratio does this plane divide the edges \( DB \) and \( DC \)?