// purpose: make a point about naming

import java.util.*;

public class TellMe {

    // method main(): program starting point
    public static void main( String[] args ) {

        Scanner stdin = new Scanner( System.in );

        System.out.print( "Enter number: " );
        int n = stdin.nextInt();

        double s = 0.00471 * n;

        int gb = (int) ( s );

        System.out.println( "gb = " + gb );
    }
}