$ sudo apt-get update
$ sudo apt-get install libwww-mechanize-formfiller-pe

libwww-mechanize-formfiller-pe is installed in your system.

Make ensure the libwww-mechanize-formfiller-pe package were installed using the commands given below,

$ sudo dpkg-query -l | grep libwww-mechanize-formfiller-pe*

You will get with libwww-mechanize-formfiller-pe package name, version, architecture and description in a table

libwww-mechanize-formfiller-pe package basic information: