LL3.8: where kernel packages & *.deb packages generally stored in file system ?

[Moltke]

Had a look at the above location, but only some packages listed, i.e.
firefox, flashplugin, gir1.2, libn*, libpcap, libsmbclient, libsnapd, libssh, libwbclient, network manager, samba packages.

Can't see Kernel packages or others.

For kernel packages check under

Code:

ls /lib/modules