user=> (def to-english (partial clojure.pprint/cl-format nil "~@(~@[~R~]~^ ~A.~)"))
#'user/to-english

user=> (to-english 1234567890)
"One billion, two hundred thirty-four million, five hundred sixty-seven thousand, eight hundred ninety"

user> (def to-english (partial clojure.pprint/cl-format nil "~@(~@[~R~]~^ ~A.~)"))
#'user/to-english
user> (to-english 1234567890)
"One billion, two hundred thirty-four million, five hundred sixty-seven thousand, eight hundred ninety"
user> 

user> (def hundred-times (partial * 100))
#'user/hundred-times
user> (hundred-times 5)
500
user> (def add-hundred (partial + 100))
#'user/add-hundred
user> (add-hundred 5)
105
user>