$$807$$ 
Find the value of $$\left\textbackslash{ \frac{2018+1}{5} \right\textbackslash} + \left\textbackslash{ \frac{2018+2}{5} \right\textbackslash} + \cdots \cdots + \left\textbackslash{ \frac{2018+2017}{5} \right\textbackslash} + \left\textbackslash{ \frac{2018+2018}{5} \right\textbackslash}$$. 
(1) $$1$$ 
(2) $$751$$ 
(3) $$810$$ 
(4) $$1009$$ 
(5) None of the above 