Convert from gros to quintal [Portugal]

Unit Definition (gros)
The gros is a traditional French weight unit equal to 3 deniers (about 3.824 grams).

Unit Definition (quintal [Portugal])
The quintal [Portugal] is a traditional unit of weight in Portugal. The Portuguese quintal is equal to 128 libras (about 129.5 pounds or 58.75 kilograms).