It's going good

Hi. I'm Ben Whittaker.

I received an e-mail about an interview for the senior intern program.

Hey, Ben. How's it goin'?

It's going good, real good. Thank you.

Excellent.

見於《The Intern》8：09 / 2：01：28

【It's going good】
going is a verb form

good is an adjective and used with nouns

well is an adverb used with verbs

The answer should be：It's going well.

But people always say: It's going good.