$1.$ Write a simple calculator program. Follow the steps below:

a$.$ Declare and define a function named Menu which displays a list of choices for user such as addition, subtraction, multiplication, & classic division. It takes the choice from user as an input and return.

b$.$ Define and declare a separate function for each choice.

c$.$ In the main body of the program call respective function depending on user$$s choice.

d$.$ Program should not terminate till user chooses option to $$Quit$.$

$2.$ Implement the following functions for the calculator you created in the above Task

a$.$ Factorial

b$.$ x$\_$power$\_$y $($x raised to the power y$)$

c$.$ log

d$.$ ln $($Natural log$)$

NOTE $-$ You will need to provide screenshots and$/$or program code of the exercises as proof of completion of the exercises above