Wow we are so alike, 
except I also use my fingers!
Funny, my cousin shared something similar to the Japanese method recently. The only thing I need to figure, is how they account for when there is a two or more digit in the middle?
It goes something like this:
@simi11,
This link below by @entwyfhasbeenfound, also sparked my query. It’s an interesting watch, you’ll survive the narrator’s ability to speed talk, if you change your breathing to match, I eventually did, and speed watched a jam packed, informative, and otherwise lengthy movie. 
