nzs sa ekulidovim algoritmom

        private long NZS(long a, long b)
        {
            /* NZS = NZD * a1 * b1
             * a1 = a / NZD
             * b1 = a / NZD
             *
             * NZS = NZD * (a / NZD) * (b / NZD)
             * ||
             * V
             * NZS = a * (b / NZS)
             */

            long nzd = EuklidovAlgNZD(a, b);
            long nzs = a * b / nzd;
            return nzs;
        }

        private long EuklidovAlgNZD(long a, long b)
        {
            while (b > 0)
            {
                long tmp = b;
                b = a % b;
                a = tmp;
            }

            return a;
        }