Convert from quintal [Portugal] to electron

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).

Unit Definition (electron)
The electron is the mass of the electron, often used as a unit of mass in particle physics. An electron has a mass of about 9.109 382 x 10E-31 kilogram, 9.109 382 x 10E-28 gram, or 0.510 9989 million electronvolts.