I suspect that number is too high. 90 numbers per dial doesn't necessarily mean 90 valid positions. It could easily be 20 or 30 valid positions which comes out to a lot less. Plus, not all combinations of individually valid positions are themselves necessarily valid.
For example a standard Master dial lock has 40 hash marks but, IIRC, older ones had only about 12 valid positions. There was a trick you could use to find the third position, which would have left 144 combinations try except there were a few invalid combinations reducing to around 120. This is for a lock that a naive estimate would but at 40^3 or 64,000 combinations.
Master Locks have always had little hacks to them - for many years you could find the first position by feeling the tension difference, then the second and third positions were at predefined offsets which would change every few years as the offsets became widely known (pre-internet). My favorites were the keypad locks that allowed the numbers to be entered in any order - after a few weeks of use the paint would wear off the numbers being used so you didn’t need to guess at all - just be patient. Fast forward to today and you have two dozen guys on YouTube tearing down the locks, and you realize that most are only good enough to keep honest people honest.
For example a standard Master dial lock has 40 hash marks but, IIRC, older ones had only about 12 valid positions. There was a trick you could use to find the third position, which would have left 144 combinations try except there were a few invalid combinations reducing to around 120. This is for a lock that a naive estimate would but at 40^3 or 64,000 combinations.