FIFO and LIFO costs under perpetual inventory system

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

Beginning inventory $25$ units at $$45$

Sale

$19$ units at $$65$

First purchase

$17$ units at $$46$

Sale

$14$ units at $$65$

Second purchase

$27$ units at $$49$

Sale

$26$ units at $$65$

The firm uses the perpetual inventory system, and there are $10$ 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?