Calculate sum of column

[MinhTa]

Here I have two tables separated by 3 empty rows. I want to calculate the sum of column "numbers" of each table, how can I do so?

Desired output:

Thank you

[Qiu · Accepted solution]

@MinhTa 
Hope this is what you need.

[FredNajjar · Accepted solution]

Hi @MinhTa 

I hope this answer your question. 

Cheers, 

FN