how to remove brass from spent shotgun shells

[Tactical Turtle 11]

As the title says I wanna know if there is a easy way to remove the brass from spent shotgun shells. I have a out door range near me with the ground covered in spent shells, a easy 10k and saw a opportunity to make some extra cash to buy ammo with, if I can remove the plastic from the spent brass atleast. If anyone can help lmk, I'm sure at 2 bux a pound and that many shells I should be able to get enough togther to buy atleast a case of ammo

[intercooler 41]

Gas , match and barrel

[Ray Ray 3,566]

A pair of dikes pliers and a pair of needle-nose pliers. Works for me!