What is the zakat due on a sum of $2,600 US dollars that has completed a full year (hawl), knowing that the nisab is $1,000 US dollars?

The nisab (threshold for zakat obligation) for current banknotes and currencies is the equivalent value of 85 grams of gold or 595 grams of silver. The nisab cannot be fixed at a specific number of currency units due to the fluctuating prices of gold and silver. Zakat becomes obligatory at a rate of one-quarter of one-tenth (2.5%) after the completion of a full lunar year (hawl). For the amount mentioned, it is estimated at sixty-five dollars. Cash money is subject to zakat in its entirety. If a portion of it is merchandise, the merchandise should be valued, its value added to the cash money, and zakat paid on the total amount.