The Best Basic Calculator Ever Invented

I originally bought this to have a great, cheap calculator. It works better than normal basic calculators due to some new features which are better than the TI 30X. Some of these features include a 4 way arrow button, which allows editing a number/sign, and allows you to see a previous problem. There is even a better use for these, one use you probably have never seen before. This feature allows you to have an infinite amount of numbers on a screen, which I found very interesting when I bought it.
However, I have found but 1 glitch in the calculator-it does not do exact problems. For example, if I push in .03*.02, it says the answer is 0, no matter what form of math you put it on (the calculator has 3). This can be fatal if used on a very exact math problem.