b) Demonstrate using the table format below, how progress payments to a subcontractor are calculated and displayed in the subcontract documents. Use the following data to provide the example: A supply and fix contract price of $42,860.00 for the joinery to a two-storey office complex Four equal payments to completion. Apply 10% cash defects retention up to 5 % of the contract value. Item Stage of Work Claim $ Retainer Percent Retained value $ % Progress Payable $ 1 2 Contract Sum $42,860.00 Supply and deliver joinery units Install and prepare for other trades Finalise Completion 3 4 End defects period Total