Question Number 134259 by Dwaipayan Shikari last updated on 01/Mar/21
$$\frac{\mathrm{1}}{\mathrm{998}}+\frac{\mathrm{1}}{\mathrm{998}.\mathrm{1995}}+\frac{\mathrm{1}}{\mathrm{998}.\mathrm{1995}.\mathrm{2992}}+\frac{\mathrm{1}}{\mathrm{998}.\mathrm{1995}.\mathrm{2992}.\mathrm{3989}}+…=\frac{\mathrm{1}}{\mathrm{997}} \\ $$