E -Lips

According to the ellipse equation

$9x^{2} + 16y^{2} - 54x +32y - 47 = 0$

If the points $A$ and $B$ are the endpoints of the major axis, the points $C$ and $D$ are the endpoints of the minor axis, and the points $E$ , $F$ being the foci.

Find the difference between the area of the square $ACBD$ and $CEDF$ . Take the floor function to the value. Give your answer below.