Clearly, your system is set to use the decimal comma so the value èè.5 is not treated as a number.
Look at what you get entering the formula :
=1/2
I wish to add that =SUM (B2+B3) make no sense.
You are asking the app to sum the result of B2+B3 to nothing.
Choose one of the two logical syntaxes
=B2+B3
=SUM(B2,B3)
The first one will issue an error if one of the treated values is not a number.
The second one will just drop the non numerical value(s).
Yvan KOENIG (VALLAURIS, France) mardi 18 octobre 2011 10:18:01
iMac 21”5, i7, 2.8 GHz, 4 Gbytes, 1 Tbytes, mac OS X 10.6.8 and 10.7.0
My iDisk is : <http://public.me.com/koenigyvan>
Please : Search for questions similar to your own before submitting them to the community