I have a tab delimited file and I want to multiply each value in the file with 50 and the user input value ($df). My code is giving me following error :

Argument "6 20 40 " isn't numeric in multiplication (*) at - line 9, <FILE> line 3.

use warnings;
print " Enter the dilution factor. \n";
 chomp ($df = <STDIN>);
 open FILE, "45well.txt" or die $!;
 while (<FILE>){
 chomp $_;
  @values = split('\t', $_);
  $val = @values;
  foreach $val (@values){
 $DNA_conc = $val * $df * 50 ;
 print $DNA_conc;
 print"\n";
 }
 }
 close (FILE);

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In reply to handling tab delimited files by shaludr

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