I went and sat down and played this. This is not too bad. I think that this is a decent attempt given the current circumstances.
There was a nice diverse range of complex puzzles which progressively got harder. Attention has clearly been given to the difficulty curve which has made your game feel rewarding. Graphics are good, although some more attention to detail and visual clarity would go a long way with this.
It was hard at times to figure out what to even look at which resulted in mindlessly clicking across the screen to find that one area. For example, it took me a substantial amount of time to learn that you can click the bookshelf which should have been more apparent, perhaps a visual effect would help here or maybe even a cursor (a magnifying glass) for example.
In addition, I think that this game could benefit from a notepad of sorts. A pad which you can note things down on in-game as some people may wish to store information without having to memorise it. Especially due to the need for mathematical calculations.
On the whole, this feels like a competent attempt in Design, Programming, and Art. With more attention to Quality of Life changes, this can be a really good game. Well done.