sam@home-pc:~$ sudo dpkg -i Downloads/apt_1.5_i386.deb 
(Reading database ... 405604 files and directories currently installed.)
Preparing to unpack Downloads/apt_1.5_i386.deb ...
Unpacking apt (1.5) over (1.5) ...
dpkg: dependency problems prevent configuration of apt:
 apt depends on libapt-pkg5.0 (>= 1.5~beta2~); however:
  Package libapt-pkg5.0:i386 is not configured yet.

dpkg: error processing package apt (--install):
 dependency problems - leaving unconfigured
Processing triggers for libc-bin (2.26-0ubuntu2) ...
Processing triggers for man-db (2.7.6.1-2) ...
Errors were encountered while processing:
 apt