Cullumber Pharma just received revenues of $3,163,400 in Australian dollars (A$). Management has the following exchange rates: A $2.6300/£ and $2.1020/£. What is the U.S. dollar value of the company's revenues? (Round intermediate calculation to 4 decimal places, e.g. 15.2578 and final answer to the nearest whole dollar, e.g. 5,275.)