my code is the second pic, i alreday finish the calcuale part. but, i just don't how to print out the 1........n and make them print out like 1x2x3x4x5.......xn = n2. so please show your work thanks

Problem: Factorial In mathematics, the notation n! represents the factorial of the nonnegative integer n . The factorial of n is the product of all the nonnegative integers from 1 to n. For example, 7-1x2x3x4x5x6x7-5,040 (remember O-1) Write a program that is using a loop to calculate a factorial. Specification of the program: The program informs the user what is calculating . The program repeats the calculation of the factorial till the user wants to enter an integer. If the user enters a negative integer it is a signal that the user doesn't want to calculate more factorials. The user needs to be informed about it at the beginning The program displays the value of factorial for non-negative integers The program displays "Thank you for using my program!" at the end Note: In the program you can use only tools and methods introduced in this class till the time of the assignment, and it has to work for Python 3.6 version (the version used in class.)