How to implement a program interface for performing operations on matrices?

Question

User interface

Good day to all !
Note (required) : This question does not address mathematics per se. The question was asked to hear the opinion of literate people who faced such a task or performed something similar. If you decide to " report " as an active user by leaving your comment or answer here, you are kindly requested to do so based on your knowledge.
The essence of the question: How to implement the design of a desktop application that performs operations on matrices (addition, subtraction, multiplication, division) in a way that is intuitive or at least not too complicated?
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Answer 1

Once I did a test task for one company, a small layout remained from them, judging by it, it is just what you are looking for!