Tried it multiple times, multiple ways, but it still says my answers are wrong. Can someone help me?

The Bradley Corporation produces a product with the following costs as of July 1, 20X1: Material Labor Overhead $4 per unit 4 per unit 2 per unit Beginning inventory at these costs on July 1 was 3,500 units. From July 1 to December 1, 20x1, Bradley Corporation produced 13,000 units. These units had a material cost of $4, labor of $6, and overhead of $4 per unit. Bradley uses LIFO inventory accounting. a. Assuming that Bradley Corporation sold 15,000 units during the last six months of the year at $19 each, what is its gross profit? Gross profit $ 89,000 b. What is the value of ending inventory? Ending inventory $ 21,000