bug#40892: 26.3; emacs calculator.el: return values are truncated integers

[Aitor Soroa]

The calculator.el: wrongly returns integers. For instance:

emacs -Q
M-x calculator
22 / 7

The answer is '3'. Even worse, If I set calculator-remove-zeros to nil, 
then I get '3.000'


In GNU Emacs 26.3 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.22.30)
of 2019-09-16 built on lcy01-amd64-030
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Ubuntu 18.04.4 LTS

Recent messages:
Configuring package ido...done
Loading package ido...done
Loading package projectile...
Configuring package projectile...done
Loading package projectile...done (0.190s)
Loading package ccls...
Configuring package cc-mode...done
Loading package ccls...done (0.388s)
For information about GNU Emacs and the GNU system, type C-h C-a.
Emacs ready in 2.22 seconds with 16 garbage collections.

Configured using:
'configure --build=x86_64-linux-gnu --prefix=/usr
'--includedir=${prefix}/include' '--mandir=${prefix}/share/man'
'--infodir=${prefix}/share/info' --sysconfdir=/etc --localstatedir=/var
--disable-silent-rules '--libdir=${prefix}/lib/x86_64-linux-gnu'
'--libexecdir=${prefix}/lib/x86_64-linux-gnu' --disable-maintainer-mode
--disable-dependency-tracking --prefix=/usr --sharedstatedir=/var/lib
--program-suffix=26 --with-modules --with-file-notification=inotify
--with-mailutils --with-x=yes --with-x-toolkit=gtk3 --with-xwidgets
--with-lcms2 'CFLAGS=-g -O2
-fdebug-prefix-map=/build/emacs26-TP6iDo/emacs26-26.3~1.git96dd019=. 
-fstack-protector-strong
-Wformat -Werror=format-security -no-pie' 'CPPFLAGS=-Wdate-time
-D_FORTIFY_SOURCE=2' 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro
-no-pie''

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS GLIB
NOTIFY LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM MODULES THREADS XWIDGETS
LIBSYSTEMD LCMS2

Important settings:
value of $LANG: en_US.UTF-8
value of $XMODIFIERS: @im=ibus
locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
global-company-mode: t
company-mode: t
projectile-mode: t
ido-vertical-mode: t
save-place-mode: t
override-global-mode: t
cl-old-struct-compat-mode: t
tooltip-mode: t
global-eldoc-mode: t
eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t

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