norm_num
a b c : ℤθ
k j1 j2 j3 : ℤ
s : ↑(unit ^ (3 * k)) = { f := 3 * j1 + 1, g := 3 * j2, h := 3 * j3 }
w1 : (↑(unit ^ (3 * k + 2))).f = -5 - j1 * 15 + j3 * 12 + j2 * 24
w2 : (↑(unit ^ (3 * k + 2))).g = -14 - j1 * 42 + j3 * 60 + j2 * 57
w3 : (↑(unit ^ (3 * k + 2))).h = -4 - j1 * 12 + (j3 * 75 - j2 * 6)
this✝ : 42 % 3 = 0
this : 60 % 3 = 0
⊢ 57 % 3 = 0
no goals