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There are two positive integers, $$x$$ and $$y$$. $$x$$ equals to $$3^{2}$$, and $$y$$ is the base of $$5^{3}$$. What is the product of $$x$$ and $$y$$? 
Overseas Competition->Knowledge Point->Calculation Modules->Power->Computing Powers->Exponentiation of Powers
$$x=3^{2}=9$$  $$5$$ cubed is $$5^{3}$$. And the base is $$5$$.  So, $$x\cdot y=9\times 5=45$$ 