One (Mathcad) task with units
Agatha Christie wrote that the growth of Hercule Poirot, was equal to five feet and five inches.

In old Russia, the growth of man is measured in Russian inches (vershok).
Vershok is equals one-sixteenth of a Russian feet (arshin), arshin is equal to one-third of Russian yard (sagen) and sagen is equal to seven English feet.
The porter Gerasim from one novel of Turgenev had a growth of twelve vershok: "Of all her servants was the most wonderful person - porter Gerasim, a man twelve Russian inches of growth, composed of a hero ...».

What growth in cm have Poirot and Gerasim?
Please - no answer from Russia and no search in Internet! Use only Mathcad.
A lot of Russisns and not only must solve same task by reading Turgenev, Tolstoj, Dostoevskiy etc.

