/// <summary>
/// Inverts field element <paramref name="a"/> for multiplication
/// </summary>
/// <param name="a">Invetible element</param>
/// <returns>Inversed element</returns>
public static FieldElement InverseForMultiplication(FieldElement a)
{
var b = new FieldElement(a);
return(b.InverseForMultiplication());
}