Choose any of the state management techniques shown today and perform the following task:
In the boilerplate code, only the button for addition is given. Add three more FloatingAction buttons- for subtraction, multiplication and division respectively. On pressing the buttons, respective functions will be performed, just like today's session where on clicking the buttons, addition and subtraction were performed.
Clone the repository, make a branch with your name, do the assignment on your own branch and create pull requests.
