Quantities, sums (7)
I believe the answer is:
amounts
I believe this clue is a double definition.
'quantities' is the first definition.
(I know this)
'sums' is the second definition.
('amount' can be a synonym of 'sum')
(Other definitions for amounts that I've seen before include "Supplies" , "Total numbers or quantities" , "Measures" , "Totals, sums" .)