Not reliably so. If you multipy the result of 850*77.1 then the result will probably be correct (not if the multipland will regenerate the display error), so the result multiplied by 2 will display correctly as 131070. But, if you add 1 to the result, then the number displayed is 100001.
Although my work laptop uses Office 2003, I still don't use any features of Word or Excell which were not available in Office 95 or Word 6. My own PCs use OpenOffice Org, but I am considering trying the new Lotus Symphony which is now on a beta download. That, hopefully will be different to the last version which I used in 1987!