Glued Little Cubes

Joe-Ann has several little $1 \times 1 \times 1$ cubes. She joins the cubes using a drop of glue for each pair of faces in contact to each other. She made a $2\times 2 \times 2$ cube with eight little $1 \times 1\times 1$ cubes and used $12$ drops of glue. She made a $3\times 3 \times 3$ cube with twenty-seven little $1 \times 1 \times 1$ cubes and used $54$ drops of glue.

If she wants to make a $10\times 10 \times 10$ cube with a thousand little $1 \times 1\times 1$ cubes how many drops of glue will she use?