Simplify

\(\sqrt{27}=3\sqrt{3}\)

\(\sqrt{12}=2\sqrt{3}\)

\(\sqrt{147}=7\sqrt{3}\)

\(\sqrt{27}\cdot\sqrt{12}\cdot\sqrt{147}=3\cdot2\cdot7\cdot\sqrt{3}^3\)

\(42\cdot3\cdot\sqrt{3}\)

\(126\sqrt{3}\)

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