This code works fine for me:

my  %some_hash = ("foo", 35, "bar", 12.4, 2.5, "hello", "wilma", 1.72e
+30, "betty", "bye\n");

my $s = 0;
while ( my ($key, $value) = each %some_hash ) {
       
       print("number". $s++);
       print "$key => $value\n";
}
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But as you can see i add quote to the left of wilma"...