Virtualbox has 32bit and 64bit, so use Program Files folder

I thought Virgualbox would be installed in directory:
c:\Program Files (x86)\Oracle\Virtualbox

instead of directory:
c:\Program Files\Oracle\Virtualbox

but its not (screenshot).  I guess its because Oracle creates 64bit binary.

Screenshot
https://www.flickr.com/photos/taylormonacelli/14322080864/in/set-72157644550094828