Answer:
To find out how much the owners still owe, subtract the amounts they've already paid from the total bill.
Total bill: $2,685
Amount paid initially: $1,389
Amount paid later: $497
To find out the remaining amount owed:
Remaining amount = Total bill - Amount paid initially - Amount paid later
Remaining amount = $2,685 - $1,389 - $497
Remaining amount = $2,685 - $1,886
Remaining amount = $799
So, the owners still owe $799.