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$_ = "I have 2 numbers: 53147"; 
if (/(.*?)(\d+)/) 
...
#prints: Beginning is <I have >,number is <2>.
#  Don't tell me that $1 = "I have ".
#  Just execute the print statement and show the output.

use warnings;
use strict;
...
}

#prints: Beginning is <I have >,number is <2>.

my $string = "I have 2 numbers: 53147"; 
if ($string =~ /(.*)(\d+)/) 
...
    print "Beginning is <$1>,number is <$2>.\n"; 
}
#prints: Beginning is <I have 2 numbers: 5314>,number is <7>.

my $string = "I have 325 numbers: 98765  12324";  
if ($string =~ /(\d+)\D+(\d+)/) 
...
    print "Beginning is <$1>,number is <$2>.\n"; 
}
#prints: Beginning is <325>,number is <98765>.

\d, a digit[0-9]                    \D a non digit
\w, a word character[a-zA-Z0-9_]    \W a non word character
\s, a white space char [\s\t\f\r\n] \S a non-whitespace char