norm_num
case right.succ.intro.intro.intro.intro.intro.intro.intro.right.left
a b✝ c : ℤθ
b : ℕ
c1 c2 c3 : ℤ
⊢ (5553 + c1 * 16659 + (c3 * 2718 - c2 * 6729)) % 3 = 0
case right.succ.intro.intro.intro.intro.intro.intro.intro.right.left
a b✝ c : ℤθ
b : ℕ
c1 c2 c3 : ℤ
⊢ 3 ∣ 5553 + c1 * 16659 + (c3 * 2718 - c2 * 6729)