It's a tiny calculator icon in the status bar. Click it, to expand it and use it. Enter the expression to calculate and hit enter to evaluate.
Right click on the icon to change modes: hex,dec, bin or complex.There is also an option for any base b/w 2 and 24. You can also use page-down key to change base. Angle can be switched b/w radians and degrees.
In real mode operations supported are +, -, *, /, %, ^, !(factorial&...

FastScript is cross-platform multi-language scripting engine.It is intended for programmers who want to add scripting ability to their projects. FastScript is written on 100% Object Pascal and can be installed in Delphi 4-7, 2005, 2006,C++Builder 4-6 and Kylix 1-3.Unique feature of FastScript is ability to use several languages (PascalScript, C++Script, JScript, BasicScript). It doesn`t use MS Scripting Host, and can be used in Windows and Linux.

Modeling software to simulate the chemical kinetics and equilibrium of combustion (isobaric/isochoric), nuclear, catalyst reactor (CSTR) and enzyme reactions. Software can also fit/regress any parameters against chemical data with confidence bands/uncertainty analysis. Can also output normalized sensitivity analysis matrices and compute cluster & metabolic control analysis.