How do you add a second table with pre determined summaries on the same page?

a_nguyen11

Is there a way to add a second table with only summaries of the data presented in the main datatable?

e.i. The Footer callback example (https://datatables.net/examples/advanced_init/footer_callback.html) allows me to add a row with the total salary at the bottom. I want to have a summaries table where the user can see how many offices are in each city from the datatables.
Example : London - 12, San Francisco - 14, New York - 11, etc... )

Essentially manipulate the information within the datatable into a summaries table on the same page. Thanks!