This can be fixed by using translate="no" on the container for each number:

<span class="badgecount" translate="no">41</span>

This would affect translation to any language, not just English.

While some languages like Japanese have number systems of their own, I'm not aware of any that don't use our number system at all. For reference, see an example post on Japanese Stack Overflow: the top scoring answer has a score of "11" when not translated, and "11 11" when translated to English.

The Hindu-Arabic counting system (google this) is not English, it is used by many languages, and has existed well before the English language did. I would think that translate would know this. What you need to do is translate the Hindu-Arabic numbers into English words first, then you can translate them.

>> pip install num2words

import num2words
print(num2words.num2words(5))
print(num2words.num2words(57))