France, steeped in tradition, has chosen to retain the base-20 numbering system from the number 70 onwards. See below:
Please note that in Belgium and Switzerland, the numbers 70 and 90 are logically expressed as “septante” and “nonante”, respectively. In Switzerland, this logical progression extends to 80, which is referred to as “huitante”. However, Belgium has opted to retain the term “quatre-vingts” for 80.