Infinity sum

Calculus Level 5

\[ \frac{ 1 } { 1 \cdot 2 \cdot 3 \cdot 4 \cdot 5} +\frac{ 1} {3 \cdot 4\cdot 5\cdot 6\cdot 7} + \frac{ 1}{ 5 \cdot 6 \cdot 7 \cdot 8 \cdot9 } + \cdots = \, ? \]

Give your answer to 3 significant figures.

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