## Calculator

The Calculator application has two customizable components:

- Display (input and output display)

The calculator display component requires three pieces: left, center and right. The center piece is stretched to occupy the space between the left and the right piece.

- Paper (calculation log)

The calculator paper component can be a one-piece or nine-piece image. The nine-piece image component has:

- Four corner images
- Four side images
- Center images

You can design the corner images individually. The sides are stretched to fill the size of the area. The center becomes the maximum size of the graphics area.
The figure below illustrates a default Calculator and a customized Calculator.
Figure: Default and customized Calculator