Adding data from two separate columns/categories

[phamm101]

Hello,

I am trying to take an initial data input, edit a subset of items in the dataset and then combine the edited items with other non-edited items from the original input. So something like this where I divide "Pear" in half but leave the other inputs alone, and then add the "Pear Edited" value back to each of the other categories:

I'm not sure how to go about recombining the values after I've gotten to the "Pear Edited" step.

Thanks for any help!

[Qiu]

@phamm101 
Maybe something like this?