- Create an empty list called my_list.
- Append the following elements to my_list: 10, 20, 30, 40.
- Insert the value 15 at the second position in the list.
- Extend my_list with another list: [50, 60, 70].
- Remove the last element from my_list.
- Sort my_list in ascending order.
- Find and print the index of the value 30 in my_list.