в) (723 600 : 90 – 40 · 201) · (1234 - 4321 – 1999)

1) $$40 \cdot 201 = 8040$$ 2) $$723600 : 90 = 8040$$ 3) $$8040 - 8040 = 0$$ 4) $$1234 - 4321 = -3087$$ 5) $$-3087 - 1999 = -5086$$ 6) $$0 \cdot (-5086) = 0$$ Ответ: 0