How is this possible?

Question

https://www.sololearn.com/post/1049609/?ref=app

In this It says the answer is 30 isn't it 25?
Please explain

Answer 1

Yes

Answer 2

That means the increment operator works first befor doing multiplication and division .

Answer 3

5*foo++=6
Thereby 5*6=30

Answer 4

So it adds one before multiplying it right ?

Answer 5

No I mean that
5*(5+1)=5*6=30. Like this

Answer 6

Okay thanks