Python:

Define an average function that takes 4 arguments, calculates the average of the 4 numbers passed to it, and returns the result back to the caller (main) . Capture the 4 values in your main program and pass them to the function. Call the function from main. Return the result to the caller (main). Main will print the result of the calculation returned.

Call the average function three more times with three more sets of four numbers and return the results back to the caller.

Save the return values in variables in main.

Pass the three return values back to the average function to calculate the average of the averages and return the result to main which will print the final result ( average of the averages).