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  1. or download this
    use warnings;
use integer; # makes no difference
...

print $string2, "\n";
# prints 144115188075868224 ... wrong
  2. or download this
    use warnings;
use integer; # makes no difference
...

print $num, "\n";
#prints 1.44115188075868e+017
  3. or download this
    $string =~ s/\.//;
$string =~ s/e/crap//i;