Add up either way (3)

I believe the answer is:

tot

I believe this clue is a double definition.

'add up' is the first definition.
(synonyms)

'either way' is the second definition.

(Other definitions for tot that I've seen before include "Spirit measure" , "An arithmetic babe?" , "Rum measure" , "Add the little child?" , "Add - youngster - dram" .)

I've seen this clue in The Times.

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