Extending A Floating Point Number to Extra Decimal Places

Question

So, in my beginner python class, we were asked to perform some basic arithmetic on numbers typed by the user, basic stuff. It was supposed to return a number with 2 decimal places, but I can only get it to extend to one. If the decimal terminates at the first decimal, is there a way to add another place? If the decimal terminates later, or is infinite, is there a way to display the second number as well?

    print "Please enter the month of your birthday as a number.";
    print "\t Jan = 1";
    print "\t Feb = 2";
    print "\t Apr = 3"
    print "etc, etc, etc."
    num = input("\n");
    day = input("What date were you born on?\n");
    new = (((((((((((num * 7.0) - 1.0) * 13.0) + day) + 3.0) * 11.0) - num) - day) / 10.0) + 11.00) / 100.0);
    print "You were born in the", new, "month.";

Answer 1

Just had to experiment for a little bit, and my solution is kind of cheating.

    new = str(new) + "0";

This changes the "new" into a string, and adds an extra 0 to the float.