On a more serious note I reckon it would be 37 although be careful as there are 37 on the 4.1 also.
4.625 is 37 crown wheel and 8 pinion. 37 / 8 = 4.625.
4.111 is 37 crown wheel and 9 pinion. 37 / 9 = 4.111
Just to add, they are a matched set. They are not to be mixed.
Eg, you dont put a new crown wheel with a second hand pinion even if they are the same ratio as they are manufactured as a matched set and are not to be split.