of OpenOffice Calc which was developed by a German Company namely, Star Division in . . Working with OpenOffice Calc Calc is the spreadsheet component of OpenOffice. You can enter any kind of data in a spreadsheet and then manipulate this data to produce certain results.
Alternatively, you can enter data and then use Calc in a ‘What If...’ manner by changing some of the data and observing the results without having to retype the entire spreadsheet.