⊦ j = i0 + j0 ↔ j - i0 = j0
i0 - j * j0 = i0 |%| j, 0 < j ⊦ j = 0, ∃ i1. j * j1 + i0 |%| j = j * i1 + i0
Used terms: i0 |%| j, j * j0, i0