I sell eBooks, and Books (and DVDs) on Amazon and Nook are assigned ISBN numbers, ISBN-10 and ISBN-13.

MS Excel, seems to want to put strings of numeric characters, sometimes called "numbers", 10 characters and larger, into scientific notation.

Of course that really wrecks the ISBN "number".

How dos one turn that feature "off"? (Turning 10+ character numeric strings into scientific notation).