Quick maths check: 400,000 times 8 is 3.2 million. So yeah, Obama must have deported way more than 400,000 per year in that 3 year period if he was deporting fewer than that for the other 5 years. Or, just maybe, your numbers are bullshit.
So yeah - do you think you might want to check whether the reason why some of your numbers sound so crazy is because they are all a work of fiction?