Extract Emails to Grouped CSV

I have three separate Word files that hold roughly 250 email addresses in total. I need those addresses transferred into a single CSV. Please group the emails by the Word document they came from and label them “Document 1”, “Document 2”, and “Document 3” in a dedicated source column... (Budget: $10 - $30 USD, Jobs: Data Annotation, Data Cleansing, Data Entry, Data Integration, Data Management, Data Processing, Excel, Web Scraping)