* use correct font for calculations

Change-Id: Idd370678c000bf22c460c3323bd55cd827ba7153
Reviewed-on: https://gerrit.libreoffice.org/45698Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Szymon Kłos <szymon.klos@collabora.com>
(cherry picked from commit 923ca4ef)
Reviewed-on: https://gerrit.libreoffice.org/45824