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Algebra Level 4

$\left(1 + \frac{1}{3}\right)\times \left(1 + \frac{1}{3^2}\right) \times \left(1 + \frac{1}{3^4}\right) \times \left(1 + \frac {1}{3^8}\right) \times \left(1 + \frac{1}{3^{16}}\right) \times \cdots = \ ? \$

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