I did this..
Took file “NameObjectFile.xls”,
first save as .xlsx,
then save as .zip ( “NameObjectFile - Kopie.zip” : https://app.box.com/s/ih9k6o7s5f3vkb21jyyso0mcqoh82isb )
and then double click on it and get this: NameObjectFile_xls_xlsx_zip.JPG : https://imgur.com/iAVFSOh




I get stuff like this:
_____ Workbook: Main.xls ( Using Excel 2007 32 bit )
NameObjectsFileAsZip NameObjectsFileAsZip
[Content_Types].xml
NameObjectsFileAsZip\docProps docProps
app.xml
core.xml
thumbnail.wmf
NameObjectsFileAsZip\xl xl
styles.xml
workbook.xml
NameObjectsFileAsZip\xl\externalLinks externalLinks
externalLink1.xml
NameObjectsFileAsZip\xl\externalLinks\_rels _rels
externalLink1.xml.rels
NameObjectsFileAsZip\xl\theme theme
theme1.xml
NameObjectsFileAsZip\xl\worksheets worksheets
sheet1.xml
NameObjectsFileAsZip\xl\_rels _rels
workbook.xml.rels
NameObjectsFileAsZip\_rels _rels
.rels
Worksheet: NameObjectsFileAsZip

NameObjectsFileAsZip_NameObjectsFileAsZip
_____________________[Content_Types].XML Content Types--xml.jpg . https://imgur.com/n9FQUxR
________________
NameObjectsFileAsZip\docProps_______docProps docProps.JPG : https://imgur.com/SRBBdyg
____________________________________app.XML app xml.JPG : https://imgur.com/qeeWrpm
____________________________________core.XML core xml.JPG : https://imgur.com/jZ3iSo7
____________________________________thumbnail.wmf
________________
NameObjectsFileAsZip\xl_____________xl xl.JPG : https://imgur.com/408pO7A
____________________________________Styles.XML styles xml.JPG : https://imgur.com/71fDgcw
____________________________________Workbook.XML workbook xml.JPG : https://imgur.com/AJ3et9N
________________
NameObjectsFileAsZip\xl\externalLinks___________externalLinks externalLinks.JPG : https://imgur.com/SPj3lZY
________________________________________________ex ternalLink1.XML externalLink1 xml rels.JPG : https://imgur.com/qHnFz7u
________________
NameObjectsFileAsZip\xl\externalLinks\_rels______________rels _ rels.JPG : https://imgur.com/GwEBoFG
__________________________________________________ _______externalLink1.XML.rels externalLink1 xml rels.JPG : https://imgur.com/qHnFz7u
________________
NameObjectsFileAsZip\xl\theme___________________theme theme.JPG : https://imgur.com/KyceI30

________________________________________________th eme1.XML theme1 xml.JPG : https://imgur.com/hGgsgOQ
________________
NameObjectsFileAsZip\xl\worksheets______________worksheets worksheets.JPG : https://imgur.com/D8hqFpr
________________________________________________sh eet1.XML Sheet1 xml.JPG : https://imgur.com/ycxiL62
________________
NameObjectsFileAsZip\xl\_rels____________________rels _ rels.JPG https://imgur.com/u84DcoX

________________________________________________Wo rkbook.XML.rels workbook xml rels.JPG : https://imgur.com/L8fNakM
________________
NameObjectsFileAsZip\_rels___________rels _rels.JPG https://imgur.com/Tahoick
____________________________________.rels rels.jpg . https://imgur.com/pWaSeIo