The formula above can easily be integrated on Wolfram Alpha (https://www.wolframalpha.com/) by copying the following equation:(Sum[Divide[0.3,n],{n,x,7000}])* y
The formula above can easily be integrated on Wolfram Alpha (https://www.wolframalpha.com/) by copying the following equation:(Sum[Divide[0.3,n],{n,x,7000}])* y