How to Add period only if there isn't one already?


Hello i am currently trying to use a formula that will take a name from a cell and add a period to it since it it the end of the sentence. This is the formula i use.

=[Name]@row + "."

The problem is, is that some of the names have periods already at the end because its words like Inc. or LLC. so how would I make it add a period but only if there isn't one.





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