Multiply int in array list OCAML : Hi I'm trying to solve this problem in OCAML: 
I have two arrays of variable size like [1;4;5] [3;2;3] that rappresent TWO integer: 145 and 323.
I would to multiply this two number (145*323). The result (46835) I want to rappresent how [4;6;8;3;5].
Can you help me please? 