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It should allow the user to enter mathematical expressions the same way he is used to in school and university. It should support brackets and nested brackets to any level and also support exponential, logarithmic, and trigonometric functions and the brackets of these functions can contain functions This way any function can be expressed for scientific calculations, plot graphs or calculus.

Now imagine an engineer who wants to solve a design problem to take some decision. The problem can be solved by multiplying matrix A with the inverse of matrix B and adding that to that the result of matrix B multiplied with the inverse of matrix A. The normal Divisble online calculator would not do to solve this problem. However; this calculator should give the user the appropriate tools to solve such problem. The user can declare three matrices internally and manipulate them to do a sequence of matrix operations on data and follow up on the display screen the progress of operations to reach the answer. This is usually done with sophisticated mathematical platforms that are usually very expensive but never with any calculator. one should be able to do all these sophisticated functionalities just by pressing buttons and not by writing code like the other programs demand.