| 0 < j0, i0 < j, 0 < j, 0 ≤ i, 0 ≤ i0 ⊦ (i * j + i0) / (j0 * j) = i / j0 |
⊦ 0 < j ∧ 0 ≤ i → (i0 = i / j ∧ j0 = i % j ↔ i = i0 * j + j0 ∧ 0 ≤ j0 ∧ j0 < j)
i = i1 * j0 + j1, 0 < j, i0 < j, 0 < j0, j1 < j0, 0 ≤ i0, 0 ≤ i, 0 ≤ j1 ⊦ (i * j + i0) / (j0 * j) = i1
Used terms: i, j0, i1, j1