static double round(double number, int digits) {
        double rounded = 0;
        double factor = 1;
        int vorzeichen = number < 0 ? -1 : 1;
        number *= vorzeichen;

        for(int i=0;i<=digits;i++) {
            factor *= 10;
        }

        double newNumber = (int)(number*factor);

        if(newNumber%10==0) {
            rounded = number;
        } else if(newNumber%10>=5) {
            rounded = (int)((newNumber+10)/10)/(factor/10);
        } else {
            rounded = (int)(newNumber/10)/(factor/10);
        }

        return rounded*vorzeichen;
    }