Define a function named div with two named parameters. The first is the dividend and the other is the divider The divider is optional, and its default value is 1.

div ~divider:3 ~dividen:12;; (* return 4 *) div ~dividen:12 ~divider:3;; (* return 4 *) div ~dividen:10;; (* return 10 *)

please use OCaml for the coding.