NaCl unit cell

This is my NaCl unit cell.

Length and Width in cm.: 4 X 4 X 4
nanometers: 4,000,000 X 4,000,000 X 4,000,000
angstroms: 40,000,000 X 40,000,000 X 40,000,000
meters: .004 X .004 X .004

Mass: .00031 grams
Moles:  5.3 e^-6 moles
Molecules in one cube of NaCl: 3.19 e18 molecules
Dimensions of a cube of NaCl: 629603nm X 629603nm X 629603nm
Number of unit cells in a cube: 4.5 e18 unit cells