public static String operator *(ElementBuilder element, int num)
    {
        StringBuilder sb = new StringBuilder(element.ToString());

        for (int i = 1; i < num; i++)
        {
            sb.Append(element.ToString());
        }

        return sb.ToString();
    }

    public static String operator *(int num, ElementBuilder element)
    {
        StringBuilder sb = new StringBuilder(element.ToString());

        for (int i = 1; i < num; i++)
        {
            sb.Append(element.ToString());
        }

        return sb.ToString();
    }