Simon Says
Simon asks you to perform operations on a list of numbers that only he tells you.
You should ignore all other instructions given.
Create a function which evaluates a list of commands (written in plain English) if the command begins with Simon says. Return the result as an integer.
Examples
<br>simon_says([<br> "Simon says add 4",<br> "Simon says add 6",<br> "Then add 5"<br>])<br>output = 10<br><br>simon_says([<br> "Susan says add 10",<br> "Simon says add 3",<br> "Simon says multiply by 8"<br>])<br>output = 24<br><br>simon_says([<br> "Firstly, add 4",<br> "Simeon says subtract 100" # Look at the name closely :)<br>])<br>output = 0<br>
Notes
- If no instructions are given by Simon, return 0.

- For the sake of simplicity, there will be no command for dividing.