Convert from flask to quintal [Spanish]

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 (quintal [Spanish])
The quintal [Spanish] is a traditional unit of weight in Spain. The Spanish quintal is 100 libras (about 46 kilograms or 101 pounds).