Use "do without" in a sentence

1. I'd ask them General for a leave of absence but you couldn't do without me.

Sauf si tu as besoin de moi pour la route.

2. The domestic banks put their earnings into unnecessary and non-productive accouterments, while offshore banks do without the fancy buildings and unnecessary frills and share their profits with their customers.

Les banques domestiques mettent leurs gains dans des charges non-productives et non nécessaires, pendant que les banques offshores font sans ces charges de façade et partagent leur profit avec les clients.