Hullo Ailidh (last post on previous thread!), welcome to Nerdling. Maybe this screenshot of the Nerdle rules might help? The key thing is that multiply & divide, in any sum, are done before add or subtract.
I canβt believe I did it! I couldnβt remember what to do at all. On line three I just entered all of number that I had left. I definitely need to keep this up π