How to add text at the end of a cell entry

Hello everyone. I just got setup on this forum and need some help. After searching I came up with a similar solution, but not quite what I need. The solution posted was this =A2&".jpg" this would work except for one problem. I want to start with a blank cell and when a number is entered it will add lbs after it. The column is named Weight so the cells below this would need to be setup to automatically add the lbs to the end after the number gets entered. I also looked at help creating custom formats but all it talks about is the @ symbol being used for text...for example [BLACK]@ Your assistance will be greatly appreciated.

Thank You,

Mel

Thank you Benishiryo!!