Not understood 7%(5//2)

Question

One more example

Answer 1

Which language?
Include name of language in tags.

Answer 2

If the language is Python or any other language where the '/' operator returns a float:
7%(5/2)
7%2.5
2.0

If the language is C++ or any other language where the '/' operator returns an integer:
7%(5/2)
7%2
1