def per_form_un(number):
    """
    works out, for the lattice parameters of t-LLZO, defects per cubic cm
    args:
        number (float): defect per formula unit
    returns:
        per_cubic_cm: defect per cubic cm
    """
    per_unit_cell = number * 8
    per_cubic_angstrom = per_unit_cell  / (13.003 * 13.003 * 12.498)
    per_cubic_cm = per_cubic_angstrom * 1e+24
    return per_cubic_cm