how to add a constant prefix to an existing list of populated cells

I have a single column of different numbers in 33,000 rows. I need to add a prefix in front of each number for all 33,000 numbers. The prefix is BB/. I have tried the 'replace' command tool which does work but far too time consuming for all those different numbers. Is there a shortcut to achieve this ?

Hello

If the data is in Column A for example and starts in row 2 put this formula in a blank column.

="BB/"&A2

Now copy this formula down

hope this helps

Jim