
    Calculate the total exterior wall area of a premium safety deposit vault to determine storage fees, given the vault's side length in meters, excluding the top and bottom surfaces. The vault is perfectly cubic in shape, and the bank charges rental fees based on the total area of the four vertical sides.
    

    
def lateralsurface_cube(l):
    """
    Calculate the total exterior wall area of a premium safety deposit vault to determine storage fees, given the vault's side length in meters, excluding the top and bottom surfaces. The vault is perfectly cubic in shape, and the bank charges rental fees based on the total area of the four vertical sides.
    

    """
def lateralsurface_cube(l):
    """
    Calculate the total exterior wall area of a premium safety deposit vault to determine storage fees, given the vault's side length in meters, excluding the top and bottom surfaces. The vault is perfectly cubic in shape, and the bank charges rental fees based on the total area of the four vertical sides.
    

    """
    LSA = 4 * (l * l)
    return LSA