How is the output 16?

Question

I was doing a challenge and I came across this question with code similar to this but written in C#. How is the output 16 can someone explain that to me?

https://code.sololearn.com/c10Jz7oEbTz9/?ref=app

Answer 1

You start with j=3
In the for loop, you go from i=5 to i=8, where j is increased in each of these four steps
i j
5 4
6 5
7 6
8 7
9 loop condition not met

So after the loop, i=9 and j=7
Therefore i+j gives you the result 16

Answer 2

Ohhhhh ok, thx