Aircard 770s connecting to N900 WNDR4500 V3

I have an unlimited moblie hotspot (AirCard 770s) as my only internet access.  I also have a WNDR4500 V3 routher.  I would like to connect the aircard to the router as the internet access and then be able to broadcast wirelessly through router to other devices in home.  I think this would extend my range on the router side and make it easier to access printer, etc.

Is there any way this can be done.

Thanks