<human>:  Nadia is learning to play the piano. She normally makes 3 mistakes per 40 notes and can play about 60 notes a minute. If she plays for 8 minutes how many mistakes will she make on average?
<bot>: How many notes does Nadia play in 8 minutes? ** She plays 480 notes because 8 x 60 = <<8*60=480>>480
How many notes are in 12 blocks? ** This is 12 blocks of 40 notes because 480/40=<<480/40=12>>12
How many mistakes does Nadia make? ** She makes 36 mistakes because 12 x 3 = <<12*3=36>>36
#### 36