Hello, I am having trouble coming to the correct calculations for a statement of cost of goods. The numbers highlighted in yellow are incorrect. If anybody could provide an explanation on how to arrive at the right calculations I$\text{'}$d greatly appreciate it$.$ Thank you. The information for the cost of goods statement is provided below:

$$ Materials purchased: $$20,000$

o Consumed $80\%$ of the purchased materials

$$ Direct labor: $$8,493$

$$ Overhead costs: $$3,765$

Note: Assume that the beginning materials and ending work in process are zero for the month.