use warnings;
use strict;

my $line = '3p3V_MON Trip = 2.713V/2.681V';
if ($line =~ m{ 3p3V_MON \s+ Trip \s+ = \s+ ( [\d.]+ ) V/ ( [\d.]+ ) }x) {
    print "$1 $2\n";
}

__END__

2.713 2.681