Well somehow I managed to learn the numbers in Spanish in Portuguese even tho they accept the number answers? It's not like that prevents people from typing the number using words...
I think he's complaining that when we have to answer in English, Duo won't accept numerals.... I agree, it's a pain.... we already know how to spell "fifteen" etc, don't need any more practice
Ahhh....seems to be fixed in a lot of them