EDITED: Easy way to add a large amount of individual values in tables?

EDITED FOR SIMPLIFICATION :

Hello,

I'm not sure how to describe my problem in an easy manner but here goes:

I have three tables, A1:C116, D1:F116 and G1:I116. I want to add the numbers in A1, B1 and C1 to the numbers in D1:116, E1:116 F1:119 respectively in G1:I116, the numbers in A/B/C2 to D/E/F1:116 in C117:232 etc. There is also three constants in J1:L1 that are to be added to G:I.

This didn't seem too daunting at first, until I realised how long it'd take to do that amount of manual input. Is there an easier way to automate this somehow?

Regards,
Jens