Monty Corp. Inc. had a beginning inventory of $100$ units of Product RST at a cost of $$9$ per unit. During the year, purchases were:

$\backslash$table$[[$Feb$.20,585$ units,at$,$$$10,$Aug. $12],[$May $5,480$ units,at$,$$$11,$Dec. $8]]$

Monty Corp. uses a periodic inventory system. Sales totaled $1,445$ units.

$($a$)$

Determine the cost of goods available for sale.

The cost of goods available for sale

$