Ahmed and his wife has AED $900,000$ worth of god $($i$.$e$.$ above the threshold$),$ excess cash of AED $550,000$ and a car which is in their personal use with AED $200,000.$ In addition, they have to pay back the loan amounting to AED $150,000$ to one of their family friends.

Keeping in view the rate of Zakat discussed in class, Please calculate the amount of zakat paid by Ahmad and his wife in the end of $12$ months islamic calendar.