import java.io.*;

public class Aufgabe5_3 {
    public static void main (String args[]) {
	double f;
	double g;
	double h;
        int i;
	f = 2/4 * 0.25;                // Zeile 5
	System.out.println(f);         // Zeile 6
	g = 7;
	i = 7;
	System.out.println( 1/g*g );  
	System.out.println( 1/i*i );  
	h = 1/g;
	f = (g*h) * (g*h) * (g*h);     // Zeile 12
	System.out.println( f-1.0 );
	f = (g*g*g) * (h*h*h);         // Zeile 14
	System.out.println( f-1.0 );
    }
}