Question: I've read on a Twitter support page that when we block a user that user will be notified that he/she has been blocked. My question is: when I block a user, that user will still be able to see my profile? Is there a way to prevent users from viewing my profile permanently?

Answer: 
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> How to change comma to dot?
> 
> 
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Use Edit, Find and Replace...

[![Find and Replace](https://i.stack.imgur.com/OzrSP.jpg)](https://i.stack.imgur.com/OzrSP.jpg)

However the result is a text string, so you might need to substitute dot with comma if to calculate with the result.
Go to "File" > "Spreadsheet settings" and modify the "Locale".