| (i1 * j0 + j2) * j + j1 = (j2 * j + j1) + i1 * j * j0, j2 < j0, j1 < j, 0 < j, 0 < j0, 0 ≤ j1, 0 ≤ j2, 0 ≤ i1 ⊦ ((i1 * j0 + j2) * j + j1) % (j * j0) = j1 + j2 * j |
j2 < j0, j1 < j, 0 < j, 0 < j0, 0 ≤ j1, 0 ≤ j2, 0 ≤ i1 ⊦ ((j2 * j + j1) + i1 * j * j0) % (j * j0) = j1 + j2 * j