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.
(..) my forces to retreat... In their absence, dispose your dead with dignity, Harry Potter, I now speak directly to you. On this night, you have allowed your friends to die for you, rather than face me yourself. There is no greater dishonor. Join me in the Forbidden Forrest... (..)2011 Harry Potter and the Deathly Hallows: Part 2