Those are three problems 1) extracting data from html and 2) parsing fixed width data 3) outputting data as csv
moritz already pointed you to the cousin of How do I post a question effectively?
There are a lot of threads on extracting data from html, its a Frequently Asked Question
There are a lot of threads on inputting or outputting CSV, its a Frequently Asked Question
See Text::CSV / Text::xSV, extract data from html with xpath, parsing fixed width data files
Now you have examples for all 3 tasks, go write some code :)
Another essay on effective question asking is http://sscce.org/ - Short, Self Contained, Correct Example
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