I need to create a formula that will fill in automatically the sequential
number FC/010, FC/011, FC/012 on the cell next to the one where I insert
information.

Ex.
Contract number Contract title
TC/010 Supply of uniforms
TC/011 Courier services
TC/012 Supply of cleaning services
Supply of paper
As I type the contract title on cell B the contract number should fill in
automatically on cell A

So far I've only managed to get a logical formula that does the function but
filling sequential numbers without letters, 1,2,3,4
=IF(ISTEXT(B2),ROW()," ")
I've also searched the excel help tool, and I found that it would be
possible through using VBA functions which I have no idea how to do. Far too
advanced for me...
Any easier solution?

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Greetings from Australia