Where are the files saved with Excel for Android?

As told in the title, I try to retrieve the saved files with Excel for Android. The files are written in a folder called "document" on the sd-card but in the Windows explorer I have no trace of the file.
Do some people can help me.
Thanks in advance
Happy NewYear for everybody

GiHem

Contact the app developer. They should be able to tell you where it is saved to