Calculate More in Window7

Do You think Calculator in Window7 is as simple as it was in earlier versions of windows?
No it is not that simple. You can calculate more with it....

• Click on the "View" menu and there we have a lot of options like..
  
  • scientific                 
  • programmers
  • statistics
  • unit conversion
  • date calculation
  • and worksheet includes
    
    
    • mortgage
    • vehicle lease
    • fuel economy