Yes, while the original version of this article was posted in November 2014, I decided to re-write it. Not quite sure why, but it was a fun thing to spend some time doing
Maybe it was just a mis-type but the 1492 example has this line:
14 / 19 = 1 remainder 4
where 19 should really be 10.
Good catch! Just fixed it. I blame fat fingers!
That is probably it. The “9” and “0” are awfully close on the keyboard.