To extract certain string with specific positions (start/end)

All i need in the Final String column, the extracted string from column String with certain positions, i.e, start position/end position.

thnx a lot, it really worked,,,,,,

@ meetvivek72

Based on your last post it seems that you are satisfied with the solution(s) you've received but you haven't marked your thread as SOLVED. I'll do that for you now but please keep in mind for your future threads that Rule #9 requires you to do that yourself. If your problem has not been solved you can use Thread Tools (located above your first post) and choose "Mark this thread as unsolved".
Thanks.