Your bug report

#47302: 27.1; calc math-format-number formatting for floats without decimals is unusual

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 47302@debbugs.gnu.org.

-- 
47302: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=47302
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