Unpacking libpopt0:i386 (from .../libpopt0_1.16-3ubuntu1_i386.deb) ...
Selecting previously unselected package libpam0g:i386.
Unpacking libpam0g:i386 (from .../libpam0g_1.1.3-7ubuntu2_i386.deb) ...
Selecting previously unselected package libtommath0:i386.
dpkg: error processing /var/cache/apt/archives/libtommath0_0.42.0-1_i386.deb (--unpack):
 libtommath0:i386 0.42.0-1 (Multi-Arch: no) is not co-installable with libtommath0:amd64 0.42.0-1 (Multi-Arch: no) which is currently installed