$1.$ Define a function called simple$\_$calculator$()$ that implements the calculator logic.

$2.$ Inside the simple$\_$calculator$()$ function:

Display a welcome message to the user and provide a list of available operations $($addition$,$ subtraction, multiplication, and division$).$

Use a while loop to continuously prompt the user to enter two numbers and choose an operation until they choose to exit.

Perform the requested operation on the two numbers and print the result.

Handle division by zero error.

Allow the user to exit the program by entering $\text{'}$q$\text{'}.$

$3.$ Call the simple$\_$calculator$()$ function to start the calculator.