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Division Algorithm. for positive integers.

Input:	a natural number a and a natural number b
Output:	Two integers q and r such that a=(q ⋅ b) + r and 0 ≤ r < b

1. if a < b then return 0,a
2. let q := 0
3. let r := a
4. repeat
   1. let q := q + 1
   2. let r := r - b
5. until r < b
6. return q,r