One of many spent in Ecuador (5)
I believe the answer is:
sucre
'one of many spent in ecuador' is the definition.
The definition and answer can be both quantities as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'one of many' is the wordplay.
I cannot quite understand how this works, but
'many' could be 'c' (C is the Roman numeral for 100) and 'c' is found within the answer.
The remaining letters 'sure' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for sucre that I've seen before include "sweetener abroad" , "Legal capital and former monetary unit of Bolivia" , "City of Bolivia" , "South American currency" , "Bolivian city" .)