DJ Ella is making a playlist for an internet radio show; she is trying to decide what 10 songs to play and in what order they should be played. Step 2 of 2 : If she has her choices narrowed down to 7 blues, 6 disco, 8 pop, and 4 hip-hop songs, and she wants to play all 4 hip-hop songs, how many different playlists are possible? Express your answer in scientific notation rounding to the hundredths place.