Thanks to John Bartow for sending a link to Excel Can't Multiply. I tried it, and it's true. Be sure to read the first response because he share some interesting insight.
I can't add anything to the article. I found that adding 1 to the result, =850*77.1 +1, returns 100,001. However, adding a value via a dependent reference, =cell + 1 forced the right answer, at least with the few I tried. Also, adding a value other than 1 forced the right answer in the full expression: =850*77.1 + 2
I didn't play anymore with it much. I was curious how deep the error might ripple through dependent expressions.
Susan Sales Harkins is an IT consultant, specializing in desktop solutions. Previously, she was editor in chief for The Cobb Group, the world's largest publisher of technical journals.