Excel 2007 fails some simple multiplications - [briefly]
07:01 PM EDT - Sep,26 2007 - post a comment
According to a post on the Microsoft Developer Network's Excel blog, the
spreadsheet application gives erroneous results for 12 basic multiplication
operations that a pocket calculator could handle flawlessly. Those operations
include 7.1*850, 5.1*12850, 10.2*6425, 20.4*3212.5, and a few others that add up
to either 65,535 or 65,536. In those cases, Excel erroneously returns a result
of 100,000:
Yesterday evening we were alerted to an issue in Excel 2007 (and Excel
Services 2007) involving calculation of numbers around 65,535. The first example
that we heard about was =77.1*850, but it became clear from our testing as well
as additional reports that this was just one instance where Excel 2007 would
return a value of 100,000 instead of 65,535. The majority of these additional
reports were focused on multiplication (ex. =5.1*12850; =10.2*6425; =20.4*3212.5
), but our testing showed that this really didn't have anything do to with
multiplication - it manifested itself with many but not all calculations in
Excel that should have resulted in 65,535 (=65535*1 and =16383.75*4 worked for
instance). Further testing showed a similar phenomenon with 65,536 as well. This
issue only exists in Excel 2007, not previous versions.
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