Answer:
The gross which the project has to remit to the contractor is $823,000
Explanation:
There are two things that must be fulfilled for the project to remit to the contractor is the amount .
1) First is the guaranteed payment of $800,000.
2) Second, the contractor's expense is more than $600,000, with a payment cap of up to $ 50,000.
The contractor has demonstrated that the cost incurred is $623,000 which is $23,000 above the limit of $600,000.
As this gap is still below $50,000, this will be handed over to the contractor by the client.
The gross which the project has to remit to the contractor = $800,000 + $23,000 = $823,000