Your efforts have been 'productive of' many benefits. [=have produced many benefits]
The farmers learned to use their land more 'productively'.
Some staff members are more 'productive' than others.
(..) Just leave me alone. - Hey. - Hey, man. Have a nice day off? - Yeah, it was good. Very productive. I got a lot done. You okay? - Oh, yeah. That's-I'm fine. - Is that clam chowder? (..)2009 TvShow: Heroes Title: Chapter One 'Orientation/Jump, Push, Fall' Season: 4 Episode 1