How to calculate: Click on the calculator, type the sum with: numbers (0,1, 2, 3, 4, 5, 6, 7, 8 and 9 you can also combine them like 273). You can also use a point instead of a coma like 3.33. And you can use + for addition - for subtraction x for multiplications and : for dividing. Hit enter to start calculating. And in a blink of a eye down left is a variable answer and the answer is there.
