How can I roll back numbers installation for the desktop, or get a copy of the previous version

Hello,

I like to try a previous version of numbers, and do not have any Mac laying around to copy the application from. I know time machine would have fixed this, but that wasn't setup either. So, are there any remedies to downloading an older version of Numbers?

alternatively I could make a trip across town to see if a family member has an un-updated version.

I have configuration issues, with the current and I rather put off to later time perhaps avoid that entirely. It would be easiest to install and reinstall; perhaps I could install it along side the recent version.

Thanks.