no goals
α : Type u
inst✝² : Group α
inst✝¹ : LinearOrder α
inst✝ : CovariantClass α α (swap fun x x_1 => x * x_1) fun x x_1 => x ≤ x_1
a b : α
⊢ cmp (a / b) 1 = cmp a b
rw [← cmp_mul_right' _ _ b, one_mul, div_mul_cancel']