Convert from marco [Spanish] to talent [Hebrew]

Unit Definition (marco [Spanish])
The marco is a traditional units of weight in various countries of Western Europe. In each country the unit equals 1/2 the unit corresponding to the English pound. Thus the French marc equals 1/2 livre, 8 onces or about 244.75 grams; the Spanish marco equals 1/2 libra or about 230 grams; the German mark equals 1/2 pfund or about 280.5 grams; and the English mark equals 8 ounces or 226.8 grams. The English unit was used almost entirely for measuring precious metals.

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.