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 Numbers.txt
33    5
34    7
...
37    8    
38    0
etc

 full_numbers.txt
1    0
2    0
...
38    0
…
3000050    0

#!/usr/bin/perl

...

open(INPUTFILE) or die("File error: input file\n");
open (OUTPUTFILE, "/Users/ts/desktop/work/full_numbers.txt");