As much as you may want it to be the case, I’m not silent. This website is however.
It will give you some code, and ask you to guess what it results in. If you don’t know, guess. Then try to figure out why it gave that result.
It will always let you know what the correct answer was, you need to figure out the justification – why did it give that answer? Using that knowledge you can understand what it’s doing and get the next ones.
Keep getting the right answers and you’ll get past each level.