e: \(=\dfrac{3^3\cdot3^{10}\cdot2^6\cdot7^2}{3^4\cdot3^3\cdot2^6\cdot5^3\cdot7^2\cdot3^2}=\dfrac{3^{13}}{3^9\cdot5^3}=\dfrac{3^4}{5^3}\)
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