Android App with Custom Calculation & Animation

I'm looking for a proficient Android developer to create an app that takes two user-input numbers, applies a custom formula to them, and then displays the result before opening the camera in full screen.

Key Features:
- User Inputs: The app should allow users to enter two numerical values using the keyboard and various buttons.
- Custom Calculations: A specific formula will need to be applied to these two numbers, which I will provide.
- Camera Functionality: After displaying the result, the app should switch to the camera view with default settings.
- Interactive Animation: Upon tapping the screen, a pre-made overlay animation will appear. I will provide this animation to the developer.

Ideal Skills:
- Strong experience in Android app development.
- Ability to integrate custom formulas into the app.
- Familiarity with Android's camera API.
- Experience working with pre-made animations.

Please note, the app's functionality is quite straightforward, but attention to detail and precision in implementing the custom formula is crucial. Looking forward to your bids.