$$\text{Find the sum} \frac{1}{2}+\left( \frac{1}{3}+\frac{2}{3} \right)+\left( \frac{1}{4}+\frac{2}{4}+\frac{3}{4} \right)+\left( \frac{1}{5}+\frac{2}{5}+\frac{3}{5}+\frac{4}{5} \right)+\left( \frac{1}{2017}+\frac{2}{2017}+\cdots +\frac{2015}{2017}+\frac{2016}{2017} \right)$$. 
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