For 1, that’s why you say “Format your answer in this exact sentence: The number of bytes required (rounded up) is exactly # bytes.
, where # is the number of bytes.” And then regex for that sentence. What could go wrong?
Also, it can do math somewhat consistently if you let it show its work, but I still wouldn’t rely on it as a cog in code execution. It’s not nearly reliable enough for that.
Sir! Excuse me, sir!