Mubashir needs your help to write a simple algorithm of multiplication.
Given an array of integers lst and an integer n, find out a pair of numbers [x, y] from a given array such that **x * y = n **.
If the pair is not found, return None.
simple_pair([1, 2, 3], 3) ➞ [1, 3]
simple_pair([1, 2, 3], 6) ➞ [2, 3]
simple_pair([1, 2, 3], 9) ➞ None
N/A