You can't calculate the total amount you need to pay Maxis for a Zerolution contract as it include your Maxis monthly postpaid line payment.

What you need to do is deduct the amount you pay for you postpaid line.

Example:

Maxis Postpaid 128 with Zerolution 24-months
Samsung S22 Ultra 51Gb

Total amount paid = RM347
Amount paid for Postpaid 128 = RM128

So the amount you paid for your device monthly should be

RM347-RM128 = RM219

The total amount you paid for the device is RM219x24months = RM5,256.

The phone price according to Samsung site is RM5,899