Investment in Brazil changes nothing (5)

I believe the answer is:

zilch

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'investment' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.

'in brazil changes nothing' is the wordplay.
'in' indicates the answer is hidden within the clue.
'ZILCH' is hidden in the letters of 'brazil changes nothing'.

Can you help me to learn more?

(Other definitions for zilch that I've seen before include "Diddly-squat" , "Nothing (US slang)" , "Nothing, zero" , "15" , "Zip" .)

I've seen this clue in the Sydney Morning Herald.

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