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original Latin: "Notandum"
That the so-called great, middle, and small numbers appearing in this present book have the following meaning: Namely, 1) a great number is called that from which nothing is taken away, and which is left in its original value. For example: Yod the 10th letter of the Hebrew alphabet is 10, and Kaph the 11th letter, with a value of 20 is 20. Add these together, and 30 results, and they remain 30. 2) A middle number is when, for example, these are put together: Ayin, Chet, Teth, original Latin "id est": that is 70, 8, and 9. Add these, and you have 87; add these 87 placed one above the other, thus: 8/7, and you have 15, which is the middle number. 3) The small or concentrated number is when you take the aforementioned 15 together, or place them one above the other, thus: 1/5, and you have 6. This number can no longer be reduced, because it consists of only one digit.
Resh, Tsadi, and He have in their own value 295, which is called the great number; place these one above the other, thus: 2/9/5, and you have 16, which is called the middle number; now place this 16 again one above the other, thus: 1/6, and you have 7, which is called the small number.