by j4p4n - uploaded on March 2, 2021, 8:44 am
Apparently Inuit language numbers are base 20 so the Arabic numeral base 10 system doesn't work well. So some students in Kaktovik (Alaska, USA) invented a base-20 number system in 1994 to fix this problem. I think the system is clean and would work quite well. This is based on a public domain image shared by Kwamikagami.