Convert from talent [Hebrew] to arroba [Portugal]

Unit Definition (talent [Hebrew])
The talent is a historic unit of weight, used in various forms throughout the eastern Mediterranean. The Hebrew sacred talent, mentioned in the Bible, was equal to 60 minas or about 30 kilograms (66 pounds). The Greek talent, also equal to 60 minas, was smaller, 25.8 kilograms or about 57 pounds.

Unit Definition (arroba [Portugal])
The arroba [Portugal] is a traditional unit of weight in Spain and Portugal, equal to 1/4 quintal. However, the Spanish and Portuguese quintals are of different sizes. In Portugal and Brazil, the arroba traditionally equals 32.38 pounds (14.69 kilograms, but in recent years this has been "metrized" to be exactly 15 kilograms). The arroba has also been used as a metric unit equal to exactly 15 kilograms. The name of the unit comes from ar rub', Arabic for "the quarter."