This is happening a lot recently, and I am very annoyed. I keep writing the right answer, but it said I was wrong. For example (this is a true story): I got the question '10 / 5/8'. Naturally, I answered 16. However, it said I got it wrong. I wrote 16/1, because those numbers are equivalent! Still wrong! I answered 16 again. I got it right! This is really annoying me know, and it might be a bug, but please try and fix it.
How can we help?