FIFO and LIFO costs under perpetual inventory system

The following units of an item were available for sale during the year:

Line Item Description Units and Cost

Beginning inventory $26$ units at $$49$

Sale $22$ units at $$74$

First purchase $37$ units at $$52$

Sale $29$ units at $$75$

Second purchase $29$ units at $$53$

Sale $20$ units at $$77$

The firm uses the perpetual inventory system, and there are $21$ units of the item on hand at the end of the year.

a$.$ What is the total cost of the ending inventory according to FIFO?

b$.$ What is the total cost of the ending inventory according to LIFO?