Harmonic Progression with pano

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How would an equation such as this be solved:

http://espice.tech/static/images/chole.jpg Any help as to what the answer was, and how it was derived, would be HIGHLY appreciated. Any information about equations such as this would be helpful too.

But, most importantly, what does "pano" mean?

Thanks in advance!!!

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I will probably get downvotes from humorless users for this, but it's too tempting. Since $pano=(pao)n$, we have

$$\begin{align}\lim_{n\to\infty}\,\left(\frac{1}{n+1}+\frac{1}{n+2}+\ldots+\frac{1}{pano}\right)&=\lim_{n\to\infty}\,\frac{1}{n}\,\sum_{j=1}^{pano-n}\,\frac{1}{1+\frac{j}{n}}\\&=\int_0^{pao-1}\,\frac{1}{1+x}\,\text{d}x=\ln(pao)\,. \end{align}$$