Route 20 Chess Club

Can you count all the moves that can be made in the first two moves? I, John Werkheiser, think I did. On the first white move twenty moves can be made. On the first black move 400 total positions are available.  On the second white move a whopping total of 32,800 positions are available. For the second black move, regardless of position, I found 11,545,600 positions! Can you count them all? (20.20.(55_82).(55_352). 20-400-32800-11545600