An investor owns a mortgage-backed security backed by a pool with a remaining mortgage balance at the beginning of month 50 of $350 million. The scheduled principal payment is $20 million. What is the estimated prepayment for the month assuming 121 PSA?

Round your answer to 2 decimal places, and express it in millions. For example if you answer is 1.2345 million, then please write down 1.23 as the answer.