Office 2007 Professional and Vista Ultimate OEM file sizes on CD/DVD

I copied my Office 2007 Pro and Vista Ultimate OEM disks to have as backups. Does anyone know the number of files and folders and possible the size on disk for these programs. From what I can tell Office 2007 Pro came with 2 disks and the first one shows only 81 files with a total file size of about 410 Megs? Is that correct?