Для openSUSE Tumbleweed запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:lxde/openSUSE_Tumbleweed/X11:lxde.repo
zypper refresh
zypper install galculator
Для openSUSE Slowroll запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:lxde/openSUSE_Slowroll/X11:lxde.repo
zypper refresh
zypper install galculator
Для openSUSE 11.4 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:lxde/openSUSE_11.4/X11:lxde.repo
zypper refresh
zypper install galculator
Для 16.0 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/X11:lxde/16.0/X11:lxde.repo
zypper refresh
zypper install galculator