| ⊦ ((n0 + n1) % m = 0 ⊃ n0 + n1;(n0 + n1) / m * m) < n0 ↔ n0 % m + n1 < m ∧ n0 % m ≠ 0, m = 0 |
((n0 + n1) % m = 0 ⊃ n0 + n1;(n0 + n1) / m * m) < n0 ⊦ m = 0, n0 % m + n1 < m ∧ n0 % m ≠ 0
n0 % m + n1 < m ⊦ n0 % m = 0, m = 0, ((n0 + n1) % m = 0 ⊃ n0 + n1;(n0 + n1) / m * m) < n0