His earnings are 'directly proportional' to the number of units he sells.
The second game followed 'directly' [='immediately'] after the first.
Their house is 'directly' ahead. = It's 'directly' in front of us.
(..) this buried treasure? Put it this way: One day the Templars simply stopped searching. They quit the Holy Land and travelled directly to Rome. Whether they blackmailed the papacy... ...or the Church bought their silence, no one knows. But it is a fact the papacy (..)2006 The Da Vinci Code