Such boring limitations, as previously noted. But monstrously large floating points and regexes? Bah. It is simple enough to compute directly using boringly small integers:
#!/usr/bin/perl -w
use strict;
my( $num, $den )= ( 1, 7, @ARGV )[2&@ARGV,-1];
my $rem= $num % $den;
my %seen;
my $rep= '';
while( 1 ) {
$rem *= 10;
last
if exists $seen{$rem};
$seen{$rem}= length( $rep );
$rep .= int( $rem / $den );
$rem %= $den;
}
substr( $rep, 0, $seen{$rem} )= '';
print "$num / $den = ...$rep\n";
Sample runs:
$ perl repDig.pl 97
1 / 97 = ...010309278350515463917525773195876288659793
814432989690721649484536082474226804123711340206185567
$ perl repDig.pl 2 97
2 / 97 = ...020618556701030927835051546391752577319587
628865979381443298969072164948453608247422680412371134
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