How hard is it to change a wheel bearing?

My car started making a scraping noise when I turn left, and research tells me the most likely culprit is my right wheel bearing. I’m assuming that replacing it is just going a few steps beyond changing brakes, but exactly how many steps? And how much harder are they? If I can do this myself, I’d much prefer that over paying like $500 in labor or whatever they’d charge me.

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