Using Files $$ Numeric Processing

I have provided for you a file named Random.txt for use in this program. This file contains a long list of random numbers. You are to write a program that opens the file, reads all the numbers from the file and calculates the following:

The number of numbers in the file

The sum of all the numbers in the file $($a running total$)$

The average of all the numbers in the file

I need help with the flowchart