display_final.html

<!DOCTYPE html>
<html>
    <body style="background-image:url('http://i.huffpost.com/gen/1698265/images/o-MATH-ON-CHALKBOARD-facebook.jpg')">
       <center><br><br><br><br><br><br><br><br><br><br><br><font color='#99ccff' size='9px'>Answer is :</font><div style= "background-color:#eeeeee; height:20px;  width:150px; padding:5px; ">{{num3}}</div>
            <form method='post' action='/show'>
                    <br><input type='submit' value='History'>
            </form>
       </center>
    </body>
</html>
   
    
    
   