Make sense, in total (3,2)
I believe the answer is:
add up
This clue is a double definition.
'make sense' is the first definition.
(synonyms)
'total' is the second definition.
(synonyms)
'in' acts as a link.
(Other definitions for add up that I've seen before include "Sum - make sense" , "Make sense; count" , "Aggregate, get total" , "tot" , "Do sums" .)