Numbers

You can type numbers directly using a keyboard or insert them by a mouse. This is a simple edit window, you can use arrow keys etc. and copy&paste a text by using standard shortcuts such as CTRL+C and CTRL+V. As the decimal point can be either a comma or a dot that means 1,234 is the same as 1.234.

Standard operators

^
Powering
*
Multiplication
/
Division
+
Addition
-
Subtraction

Of course you can use the parentheses ( and ). Look at the operators priority as well.

Built-in variables

You can use following variables, just type its name into the edit window.

e
The base of the natural logarithm.
e = 2.718...
pi
The ratio of a circle's circumference to its diameter.
pi=3.141...