You are downloading the Numerica APPX file v126.96.36.199 for Windows Phone. Numerica is a free and fun Educational game: "If you like brain twisters, especially with a mathematical orientation, then Numerica from Beautiful Mind Games is just the thing for ... You can now download the offline APPX file to install & try it.
Download Locations for Numerica 188.8.131.52 APPX file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline APPX File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Numerica APPX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.