We do not have licenses for Microsoft office products so you will need to convert your files into Google's version. This is easily done with in your google drive by uploading the file.
Upload files & folders
On your computer, you can upload from drive.google.com or your desktop. You can upload files into private or shared folders.
- On your computer, go to drive.google.com.
- At the top left, click New
File Upload or Folder Upload.
- Choose the file or folder you want to upload.
If you need more guided instructions you'll find them here