Can someone please give me step by step answers on this and please answer LIFO, FIFO and average cost under periodic AND perpetual? Thank you.

A. During June, the following changes in inventory item 500 took place 1,000 units $25 June 1 Balance 8 Sold 500 units S50 10 Purchased 900 units $26 14 Sold 800 units S50 24 Purchased 800 units $30 Instructions What is the cost of goods sold and the ending inventory for item 500 under the following methods? (Show calculations.) (9 points) (a) LIFO, FIFO and Average Cost under periodic (b) LIFO, FIFO and Average Cost under perpetual