De or het routinezaak?

The correct Dutch article is:

de routinezaak

How to use routinezaak

the routinezaakde routinezaak
this routinezaakdeze routinezaak
that routinezaakdie routinezaak
our routinezaakonze routinezaak
your routinezaakjouw routinezaak
every routinezaakelke routinezaak
which routinezaak?welke routinezaak?
a big routinezaak / the big routinezaakeen grote routinezaak, de grote routinezaak