You are downloading the Division Cards AppX file v1.1.0.1 for Windows Phone. Division Cards is a free and useful Education app: This application will allow a user to practice simple division problems (dividing a number by a numbers between 1 and 9, with an answer between 1 and ... You can now download the offline AppX file to install & try it.
Download Locations for Division Cards 1.1.0.1 AppX file
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Division Cards AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.