Design an activity that has 3 fragments

Fragment 1 It has 2 plain texts, A text view, and a button.

Fragment 2 It has a text view and a button.

Fragment 3 It has a text view and a button.

The user enters 2 numbers inside fragment 1’s plain texts. When the button is pressed, The subtraction of the two numbers will be shown on fragment 2’s text view. Also, the square of the result (subtraction) will be shown in fragment 3’s text view. Pressing the button in fragment 2, will increment the square result, and display it in fragment 1’s text view.

Pressing the button in fragment 3, will decrement the subtraction result, and display it in fragment 1’s text view.

Notes

Fragments 2 and 3 will be shown only when the user presses fragment 1’s button. Otherwise, they are invisible.
You must use the inter-communication design pattern that we have learned in class.