Magic Calculator - Simple Force Calculator is a minimalist force calculator developed to be used in magic tricks. It works by secretly storing a preset number and later displaying it instead of an actual result, but is also functional as an ordinary calculator.

INSTRUCTIONS
1. Enter the number you would like to "force" on your spectators.
2. Press and hold the "C" button. You should see that the display is refreshed just as the normal "Clear" button would do, but the number just erased is actually stored for later use.
3. Press "=" to display the stored value. Note that this is one time only, and the "=" button will function normally until another value is stored.