Elevator weighs 1600 lbs.

It's suspended by 200 ft. of cable.

Cable weighs 10lb./ft.

How much work to raise elevator 30ft.?

I have this so far:

Work of elevator = 1600 x 30 = 48000 ft-lbs.

Work of cable = 10(200-30) x 30 = 51000 ft-lbs.

What do I do from here? Thanks for your time.