An algebra problem by Abhay Kumar

Algebra Level 4

\[\dfrac{1}{1\cdot2\cdot3\cdot4}+\dfrac{1}{2\cdot3\cdot4\cdot5}+\dfrac{1}{3\cdot4\cdot5\cdot6}+\cdots\text{ till 50 terms} = \, ? \]

Give your answer upto 4 decimal places.