I always found it weird how it was dominated by the french, with very few germans in between (only 2!). What are they doing differently? It's not that math is unpopular here, a lot of students are studying mathematics and every university has a math department. But they are absolutely dominating and I can't really explain it.
In German 25 is five and twenty. 67 is seven and sixty. Annoying but bearable.
However, in French, 60 is sixty. 70 is sixty ten. 80 is four twenty. 90 is four twenty ten. 99 is four twenty nineteen.
Any French person is steeled by their crazy numbering system, from an early age, allowing them to reach the highest mathematical heights as they grow.