Let’s solve an equation! The sum of a decreasing geometric series is described by the second equation. If you would like to know why, see Peculiar Pets. Knowing this, the full equation is clearly the harmonic series, 1/1 + 1/2 + 1/3 + … . The harmonic series adds to infinity, our answer.
\sum_{k=2}^{\infin}\Bigg(\sum_{l=0}^{\infin} \Big(\frac1{k^l}\Big)\Bigg)\\[8pt] \sum_{l=0}^{\infin}\Big(\frac1{k^l}\Big)= \frac1{k-1}\\[8pt] \sum_{k=1}^{\infin}\Big(\frac1{k}\Big)= \infin\\[8pt]