double tal1, tal2, summa, tal3, summa2, summa3;
System.out.print("Mata in tal1 ");
tal1 = keyboard.readDouble();
System.out.print("mata in ännu tal2 ");

tal2 = keyboard.readDouble();
System.out.print("mata in tal3");
tal3 = keyboard.readDouble();
summa = tal1 * 2;
summa2 = tal2 * 3;
summa3 = tal3 *3;
System.out.println(" Summorna är " + summa + " , " + summa2 + " , " + summa3);