Convert from flask to vagon [Yugoslavia]

Unit Definition (flask)
The flask is a commercial unit of weight formerly used to measure liquid mercury (or quicksilver, as it was called). The flask was equal to 76.5 pounds avoirdupois, which is equivalent to almost exactly 34.7 kilograms.

Unit Definition (vagon [Yugoslavia])
The vagon is a traditional unit of mass or weight in countries of the former Yugoslavia. Originally considered to be the weight that could be carried by a wagon, the unit has been "metrized" and is now defined to be equal to the dekatonne, that is, 10 metric tons or 22 046.23 pounds avoirdupois.