You are downloading the Advanced MathCalc XAP file v22.214.171.124 for Windows Phone. Advanced MathCalc is a free Education App: Advanced MathCalc covers all mathematical formulas that are usually used in the school and the university. It has nearly 250+ functions under ten categories.. You can now download the offline XAP package file to install & try it.
Download Locations for Advanced MathCalc 126.96.36.199 XAP file
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Advanced MathCalc XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.