⊦ m ≤ n → dist(m, n) = n - m
¬ n ≤ n0 ⊦ dist(m * n, m * n0) = m * dist(n, n0)
n ≤ n0 ⊦ dist(m * n, m * n0) = m * (n0 - n)
Used terms: n0, n