Returns a number whose rightmost four digits are the minor calculation engine version number, and whose other digits (on the left) are the major version of Microsoft Excel. For a Workbook object, this property returns the information about the version of Excel that the workbook was last fully recalculated by. Read-only Long.
Remarks
If the workbook was saved in an earlier version of Excel and if the workbook hasn't been fully recalculated, then this property returns 0.