data extraction mobile num from excel

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
I need to extract numbers from multiple excel sheets. I have around 500 excel sheets with multiple numbers. you need to extract all mobile numbers 10 digits (from indiya.) Put all in 2 different workbooks with different sheets, each sheet having 50,000 numbers.Remove duplicates and keep all valid 10 digit ones. Some sheets already have numbers extracted, just need to validate 10 digits. Very easy job for excel experts.
only low budget bids please.

Skills required:
Data Entry, Data Mining, Data Processing, Excel, Web Scraping
About the employer:
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