Chapter 5.4, Problem 7P

Calculate $8\times 123,456,123,456$ using a calculator. What pattern do you see in the digits of the answer? Can you guess what the answer to $8\times 123,456,123,456$ will be? What about $8\times 123,456,123,456$

Use powers of 10 and the distributive property to explain why your guesses must be right.