At the end of the year, Heath Company's accounting records showed that they had $60$ items in stock at a FIFO cost of $$12$ each. These normally sell for $$30$ each. However, the physical inventory count found only $50$ items.

What is the amount of an adjustment, if any, that must be made to the value of the inventory at year$-$end? Enter digits only, with no commas, decimal points, or dollar signs. Type $0$ if no adjustment is needed.