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I purchased a home recently and am looking to replace an electric range with a gas one. Currently, there is a 240v outlet for the electric range but not a 120 for the gas, so I am looking to remedy that. There is an electrical receptacle immediately behind where the range sits that isn’t currently being used, so I want to put an outlet there.

I took off the wall cover and I am a bit confused by what I am seeing (picture attached). I have a bit of DIY experience with putting in outlets and switches, but nothing very complicated and I want to be sure that I do this right.

There are three sets of wire coming from different holes in the receptacle; two of them have only hot and neutral wires and the third appears to have hot, neutral and two grounds. All three sets of wires have been twisted together with their corresponding wires and capped off. Can you advise me on how to wire this in correctly?

Thank you for your time, I appreciate the help.