strange problem in excel

[RobertHx]

Can you look at my excel 1.xlsx?
Look at cell C19.

[Pepe Le Mokko]

This is a floating point arithmetic problem which is explained at this page by MS Some solutions are also provided

[RobertHx]

this file was created with LibreOffice Calc. I was thinking it is Calc responsible for this error. But when i used Excel, problem is still here. So, this is not just excel problem.
Maybe is CPU problem, X6 Phenom here.

[Pepe Le Mokko]

It has nothing to do with Excel itself, only the manner how numbers are stored. Probably the same for Libreoffice

[jeffreybrown]

We would love to continue to help you with your query, but first, before we can proceed, please see the forum rules about proper thread titles and adjust accordingly...

Your post does not comply with Rule 1 of our Forum RULES. Your post title should accurately and concisely describe your problem, not your anticipated solution. Use terms appropriate to a Google search. Poor thread titles, like Please Help, Urgent, Need Help, Formula Problem, Code Problem, and Need Advice will be addressed according to the OP's experience in the forum: If you have less than 10 posts, expect (and respond to) a request to change your thread title. If you have 10 or more posts, expect your post to be locked, so you can start a new thread with an appropriate title.
To change a Title on your post, click EDIT then Go Advanced and change your title, if 2 days have passed ask a moderator to do it for you.