Knowledge: The first country that used the Arabic number style was Iran. On the other hand, Canada was the original to start writing number 7 with a horizontal stroke.

Conversation:
The number 7 is a great number.
I can only say that its the number after 6 and before 8.
I heard that 7 has various strokes that makes it look like other numbers?
Yes, there is a horizontal stroke for 7 which separates it from 1 for those writing that use long upstrokes for 1.
I see. So in what country first used that style?

Response: Hmm I heard that Canada was the original to start writing number 7 with a horizontal stroke.