Hint: the following line is where you count the words in every line. The only difference is that you add the count to a total word count (every word in the document) as opposed to just that line. This sounds like homework so I hesitate to just give you the answer...but maybe the hint is enough to go off of.
foreach $w (split) {
$words++; # Increment the word count by one for each word.
$char = $char + length($w); #cumulative characters for all words
}
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