java - queuing networking formula -

http://postimg.org/image/w79si81zn/ hi!, i'm trying code formula posted on picture above, i'm having weird value, wondering if y'all can take @ code see what's i'm missing.

import java.util.*; public class queuing{     //get factorial     int m = 20;//20     double b = .2;     double p = .02;     double prob = .05;//.5     int notque = 0;     int not = 1-notque;     double b = 0;      public static int factorial(int n) {     if (n <= 1) {        return 1;     }     else {        return n * factorial(n-1);     }    }    public string math(){         while((1-notque) > prob){             b += .2;//             notque = 0;             double n = math.round(b/b);              for(int = 0; i<=n ;i++ ){                double mfact = factorial(m);//                double nfact = factorial(i);//                double msns = factorial(m-i);//                double ncr = (mfact)/(nfact*msns) ;//;nfact*factorial((int)msns)                double pow1 = math.pow(p,i);                double inactive = m-i;                double pow2 = math.pow((1-p),inactive);                notque += ncr * pow1 * pow2;             }        }        return "speed of " + b + " users " + m + " transmitting @ " + b + " mbps " + math.round(p*100);    }      public static void main(string []args){         queuing x = new queuing();         system.out.println(x.math());      }  }