Map: 16-bit Redstone Calculator
We present you the biggest calculator ever created in Minecraft PE. This calculator can add and subtract numbers from -65535 to 65535. You can compute multiple values to perform more complex calculations. Thanks to the huge screen, you can get your answer very quickly.
In this example, I decided to do a simple calculation. First, I selected the number 30000. Then I pressed Calculate/Subtract. After that, I pressed 6000, then Enter to display the answer on the screen.

As a result, I got the correct answer (24000), as you can see in the screenshot below.

The size of the calculator is simply staggering. If you think this mechanism is very simple, take a look at how it's built. Perhaps this calculator will give you an idea of how mechanisms work.

Installing the Biggest Calculator map:
- Download the map archive from the link below
- Extract the folder from the archive into /games/com.mojang/MinecraftWorlds/
- The map is installed, enjoy the game!