How do flash loans work?

[Robust Crypto]

Hey

I've been looking at flash loans and have a question regarding one of flash loans that does some trades/

Here's the screenshot

I want to know what the guy actually does and how much profit he made. How can we calculate it?

Is the profit shown at the bottom ($161.18) or is that just an interest payout to lenders?

[tabas]

I think it's likely the profit since the other transactions are high which is unlikely from an individual. So, the amount of $161 is the possible profit or return of the lender.
Check the interest rates through this graph. https://defirate.com/lend/
And calculate how much you have put in it.

[CucakRowo]

To OP.
Is that on same day or different day?. With such a large loan, most likely, the borrower is a trader (based on one of compound v2 and Aave policy that borrower must connect to their coinbase account) . May I know where you got this transaction from? is it from site or how?