Here are some data held by PT XYZ during 2020 :

Cost of Goods available for Sale $20,000

Cost of Goods Sold $18,000

Beginning inventory $800

Ending inventory $2,000

Account payable (1/1/2020) $5,000

Account payable (31/12/2020) $8,000

Sales revenue $30,000

Based on the data above, calculate the amount of cash to supplier PT XYZ