Create new folder for each file
I'll assume that all 408 are in the same folder and it have extension. Something like this:

Folder
|- File1.ext
|- File2.ext
|- File3.ext
|- File4.ext


And you want the following result:

Folder 
|- File1 *"This is a folder"*
   |- File1.ext *"This is the file"*
|- File2
   |- File2.ext
|- File3
   |- File3.ext&lt;br&gt;
|- File4&lt;br&gt;
   |- File4.ext&lt;br&gt;


If that's the case you can do it with the terminal with the following command (execute it inside the folder where the files are stored. It will fail creating the folder for the files without extension):

for FILE in *; do FOLDER=$(echo $FILE | sed 's/\.[A-Za-z0-9]*$//'); mkdir "$FOLDER"; mv "$FILE" "$FOLDER" ; done