1 2 3 4 5 6 7 8 9 10 11 12 13

a b c d e a b c d e a b c d e

1 2 3 4 5 1 2 3 4 5 1 2 3
(Ƒ)

                 ❘ ❘ ❘ ❘ ❘ ❘ ❘ ❘ ❘ ❘ ❘ ❘ ❘

13 : 5 = 2
  31


      Two processes of calculation lead to the same result.

Editorial notes

1) Ms-148, page 20v contains further calculations which don't seem related to the surrounding text.