Trading Intern

first round interview by phone, half an hour. There were couple of fit questions (why trading?) at beginning and then the math part. I answered rather quickly so the interviewer gave me about 8 questions in total this part. Then we came to the estimation part. I didn't realize that I had to give number in decimal point at the beginning so I missed the first one 51/123, even though I revised my answer at the 16 second... (You have to answer each one in 15 seconds) I did about 5 estimation problems. Lastly there were some fit questions like what you will do if you can't break in finance and which job you won't do even with a lot of money, etc. Lastly I asked what I can expect afterwards and they say if you pass you will have two more phone interviews and then an on-site.