A company's inventory records report the following:

Date Activities Units Acquired at Cost Units Sold at Retail

August $1$ Beginning inventory $15$ units @ $$40=$ $$600$

August $5$ Purchase $10$ units @ $$41=$ $$410$

August $12$ Purchase $20$ units @ $$42=$ $$840$

August $15$ Sales $30$ units sold

Using the FIFO perpetual inventory method, what is the value of the inventory at August $15$ after the sale?