Apple sold approximately 10 millions phones in the first three days for the iPhone 6 launch.
That makes 7 billion dollars minimum counting all models.
That quarter the profit was 1/8 of the revenue. So let's say 1 billion profit. So more than 300 million profit per day. That's more than 25 million dollars per hours on a 12 hour day.
That means that Apple made in less than 3 hours as much money as Xiaomi made in the whole 2013.