1st round mental math, but pretty easy 2nd round screening with hr, only questions about myself, not sure if it was even possible to fail 3rd round "culture fit" interview with the team. Only questions about what the role consists in and related. Some of this info couldn't be easily found online, but someone with a strong financial background or prior experience in a similar company would probably know. As a result, I got rejected soon after the interview and didn't make it into the final round. Not sure why I was even invited to the OA as I didn't satisfy any of those conditions, but hey, I got some interview practice so I can't complain.