Hi, store your numbers in an array or update the sum and count as you go, then you only need to divide by the count. Something like this: 
print "In this version you can use up to TEN NUMBERS! \n";
print "when you have entered the numbers you need type 'end' \n";
my $count = 1;
my $total = 0;

while ($count <= 10) {
     print "Enter number $count ";
     my $num = <STDIN>;
     chomp $num;
     last if $num eq "end";
     $total += $num;
     $count++;
}
print " Average is: ", $total / $count, "\n";

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In reply to Re: Average/mean calculator by Laurent_R
in thread Average/mean calculator by Paradizingmania

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