Answer
a) $\frac{2}{9}$
b) $\frac{32}{9}$
Work Step by Step
a)
$xy=\frac{8}{9}\times\frac{1}{4}=\frac{8}{36}=\frac{8\div4}{36\div4}=\frac{2}{9}$
b)
$x\div y=\frac{8}{9}\div\frac{1}{4}=\frac{8}{9}\times\frac{4}{1}=\frac{32}{9}$
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