Getting Output for 'do' Query.

my $query = qq|SELECT SUM(MINS) FROM files WHERE USER='$user'|; 
my $do = $dbh->do($query); 
print "$do"; 

Where MINS is integar, Now when I print $do it obviously prints only '1', marking return of the query. 
Running query in phpMyAdmin prints the '2864' sum of all mins. 
How I am supposed to print the same results here in script instead of '1' only.

Thanks, 
Sara.