I am trying to make one function for my work for a while and cant rly get it done. Basicaly i have two columns . 

First column are names of the items.

Second column are values of that items.


Items are sometimes repeating and i would need function that finds  repeated items and sums their assigned value. 

If there is a way how to do something like that i would really apriciate help.

By: Jakub

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