Calcute is more evolved than regular calculators. It is in fact an expression evaluator. Unlike limited hand-held devices where numbers disappear as soon as you enter the next one, Calcute lets you enter a Advanced Freeware Calculator complete expression as if you were using a regular text editor. You can see what you are doing so you can easily make corrections. Type what you want to calculate, press Enter to get the answer. The calculator keypad can remain hidden or it can be shown if you prefer to click buttons with the mouse instead of typing.