Bluebulb Projects' The Measure of Things presents:
21,000 is about 100 times the number of John Wayne films.
In other words, it's 118 times the count of John Wayne films, and the count of John Wayne films is 0.00847 times that amount.
(a.k.a. "Duke", a.k.a. JW, a.k.a. Marion Mitchell Morrison, a.k.a. Marion Robert Morrison, a.k.a. Duke Morrison) (films starring the actor in any size role)