I want Memory facility in fx991 ES Casio calculator

Sir, I am a student and I am heavily disturbed by the remembering the tough emperical formulas at my college. Sir, I want a serious help by which I can reproduce the formulas in my exams though my calculator Casio fx 991 ES, which is allowed at my exams for the cheating purpose. I know this sounds awkward but I know this is possible because the simplest mobile phones has a huge memory in them then why we can not upgrade the level of the calculators. This fx-991 ES has a screen which can display things as the answer and can even store some small things I want you to add my memory card ( 2Gb) into this calculator and I should scroll the contents through it. There should be some special command to activate the memory part of the calculator and everything should be fitted in my calculator and I should go undetected by viewing from outside I can feed the commands in that memory card through any language though my laptop Any suggestion in this regard is seriously welcomed Please help me out of it with this technology. You can use any other technique that is smarter than my idea to do this but any how help me in this exams. This is a make it or break it situation in fornt of me so I can not risk this exam at any cost, Your help and messages will be deliberately answered. Thanks in advance