Evens Into Their Own File

Input: one line of whole numbers separated by spaces, no prompt. Split it with split() and write every number to all.txt on its own line. Read all.txt back into a list of int values (use append), then write only the even ones (the remainder operator % decides) to evens.txt, one per line, in the same order. Finally read evens.txt with readlines, print its lines with end="" and then <n> even number(s) with the number of lines.