bug when subtracting decimals?

Hi,

I bemoan the apparent inability of those asking such questions to use 
the resources provided to solve these problems for themselves...

Looking at all the people who quite obviously do NOT "read the posting 
guide and provide commented, minimal, self-contained, reproducible 
code", I wonder whether the mailing list could be configured to reply to 
each new mail (not replies in a thread) with an automated mail like this:

"Have you read the posting guide and the FAQs? If you do not get a reply 
within two days, you may want to look at both and think about 
reformulating your query. Oh, and while you are at it, look through the 
archives, a lot of questions have already been asked and answered before."

Just a thought,
Stephan