The efficiency of using the countif partial text is its contribution to a productive end-result. This is a function that starts with having a data like this:
Click on an empty cell (1), and then type in the =COUNTIF(B$2:B$6,"*TL*") to find the numbers of TL.
Note: This allows the ability to count the numbers of TL that are in the column b, and this is traditionally determined by the user, so it is up to the user to decide what he or she wants to look for.