WP-Bigfoot is an excellent WordPress plugin.
The thing is it shows ellipsis instead of numbers which is not optimal.I was asked to take a look. I followed a tutorial from Unabridged Excerpt tutorial and created WP-Bigfoot-Numeric

WP Bigfoot Numeric Example

 

Free Download
https://www.dropbox.com/s/1qelfqcgts652x8/wp-bigfoot-numeric.zip?dl=1

Test WordPress site deployed in seconds? Yes, it's possible. Visit qSandbox for more info.

Disclaimer: The content in this post is for educational purposes only. Always remember to take a backup before doing any of the suggested steps just to be on the safe side.
Referral Note: When you purchase through a referral link (if any) on this page, we may earn a commission.
If you're feeling thankful, you can buy me a coffee or a beer