( 0.75 + 0.75 + 0.75 + 0.75 + 0.75 + 0.75 + 1.0 ) / 7 he wrote, and eventually arrived, after a certain amount of scribbling, at 5.5/7. Then Seamus frowned at this for a while. Eventually he recalled how to do long division and arrived, after more scribbling, at = 0.785. "So since Hermione's not here to pull up the average, we've all got to do at least as well as seventy-nine percent," he concluded.