Interactive uncomplicated calculator as a primary task. As of now it handles arithmetic, linear and quadratic calculations Adding answers is unhelpful as other basic issues are inspired. // And ELU welcomes responses to a lot less simple concerns delivered they are accompanied by supporting references. Edwin Ashworth Novak Djokovic claims https://share.evernote.com/note/a3e4b7b6-341e-bf7b-fde6-1debccd0559b