Create a file POT, PO and MO using POEdit or Loco Translate Plugin, 

then rename accordance with textdomain used by the plugin, as follows:



* llc-tax-de_DE.po

* llc-tax-id_ID.po

* llc-tax-es_ES.po

* llc-tax-en_US.po



* llc-tax-de_DE.mo

* llc-tax-id_ID.mo

* llc-tax-es_ES.mo

* llc-tax-en_US.mo





Download:

* http://wordpress.org/extend/plugins/loco-translate

* http://poedit.net/download