Is Zakat obligatory on a sum of 1800 Jordanian Dinars that has completed a full year (hawl), taking into account the significant difference between the Nisab of gold and silver?

The zakat threshold for banknotes is approximately eighty-five grams of pure gold, or five hundred ninety-five grams of pure silver. The lower of the two thresholds (the silver threshold) is considered more beneficial for the poor. Therefore, the questioner should research the price of the silver threshold and calculate their zakat from the time a full year has passed on the amount of banknotes they possess that equals the silver threshold, striving to do so based on their best estimate.