Got the FIFO and LIFO, but I couldn't figure out how to calculate the weighted average. please help, thank you!

Exercise 5-18A (Algo) Allocating product cost between cost of goods sold and ending inventory: Multiple purchases LO 5-6 Cortez Company sells chairs that are used at computer stations. Its beginning inventory of chairs was 170 units at $44 per unit. During the year, Cortez made two batch purchases of this chair. The first was a 270 -unit purchase at $49 per unit; the second was a 355 -unit purchase at $51 per unit. During the period, it sold 510 chairs. Required Determine the amount of product costs that would be allocated to cost of goods sold and ending inventory, assuming that Cortez uses a. FIFO. b. LIFO. c. Weighted average. Do not round intermediate calculations. Round your final answers to nearest whole dollar amount