Calculator Version 1.0

The initial release of the calculator app made by Yivan.

Features

 * Number pad
 * Basic funtionality (addition, subtraction, multiplication and division)
 * Says what operation you're using
 * Says what is the first addend/minuend/factor/dividend.
 * Buttons to pick for adding/subtracting/multiplying/dividing.
 * Has a useless "Show Advanced" button
 * At start, numbers will say "null"

Bugs

 * (1.0-1) Spamming any number in the keypad will result in the number "9223372036854775807"