Simplify sqrt(27)*sqrt(12)*sqrt(147).
\(\sqrt{27}\cdot\sqrt{12}\cdot\sqrt{147}=\sqrt{27\cdot12\cdot147}=\sqrt{3^3\cdot2^2\cdot3\cdot3\cdot7^2}=\sqrt{2^2\cdot3^5\cdot7^2}=2\cdot7\cdot3^2\cdot\sqrt{3}=\boxed{126\sqrt{3}}\)