How to make last four digits to xx45? use python

Again, the user should make their selection by entering the corresponding number, and bad selections should cause the menu to repeat. If customer chooses 'Cash' it should print that payment is completed and program should terminate. If the choice is 'One time pay card' then your program asks for 4-digit card number and displays the invoice as follows (see the sample output) and terminates. Note: To display the sample 4-digit number 2345 as 'xx45' you must not use any string processing functions. Instead, you should use arithmetic operators that we covered in class. Sample output: ... it first prints similar content as shown before and then ..... How would you like to pay? Select one from the following menu. (a) Cash (b) Prepaid Card > a Thank you for your payment. Have a nice day! Sample output: ... it first prints similar content as shown before and then ..... How would you like to pay? Select one from the following menu. (a) Cash (b) Prepaid Card > b Enter 4 digit card number: 2345 You have paid by xx45. Have a nice day