- I want calculator on my site, like in Excel.
I use complex formulas.
I want update new fields and sheets.
I want change currency each day.
- IT IS REAL

CALC OS is Excel file prototyping for on-line calculations.
CALC OS is server application with fast analysis (0.28 second for file) and fast calculation (0.036 second for request).

HOW IT WORK:

* you must have all copies of Excel files for restoring

I. INSTALL (only once)
1. Open sample _fob.xlsx and change cells/formulas/sheets as you need.
(use spreadsheets.google.com if you not have Excel program)
2. Upload Excel file (on this page) and save XML-report.
(HTML: <form action=http://calcos.ajes.com/xml method=POST><input name=file><input name=code></form>)

II. CALCULATE (work process)
1. XML-report have:
Link for calculation <link>http://calcos.ajes.com/xml/...</link>
2. Open this link with different variables, and get calculated values in XML.
(see variables in <post>...</post> section)

* You must re-install calculator, if Excel file changed (cell value, formula, sheet)
** You no need re-install, if currency changed, or other variables from <post>...</post> section.
*** XML-report have <sheet>..</sheet> sections for Drop-down menu organizing, Language possibilities, and so on.