Create a PowerShell Script using do while loop for the following scenario. Include comment lines in your script.

Open $4$ instances of "notepad" on your Windows $10$ VM$.$ Write a PowerShell script using do while loop that displays "Notepad is running" at an interval of $1$ second.

Once all the instances have been closed, it should stop displaying that "Notepad is running". In the end, it should also show the number of times the statement was displayed.