Work out the following multiplication.
12345679
× 9
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Use the result to answer the following questions.
(a)What will be 12345679×45?
(b)What will be 12345679×63?
(c)By what number should 12345679 be mulyiplied to get 888888888?
(d)By what number should 12345679 multiplied to get 999999999?