[Pannoniae]

Looks correct to me on 3.7 extended (albeit with loooots of thinking) although I'm incredibly exhausted so I might not be mathing correctly:

https://claude.ai/share/dfb37c1a-f6a8-45a1-b987-e6d28e205080

[ducktin]

It found two solutions for 40 but one of them omitted the 5 the other added a 3.

12 * 3 + 4 = 40

1 * 2 * 3 * 4 * 5 / 3 = 40