Given the following information, determine the cost of the inventory at June $30$ using the LIFO perpetual inventory method.

$\backslash$table$[[$Date$,$Activities,Units Acquired at Cost,Units Sold at Retail$],[$June $1,$Beginning inventory,$15$ units @ $$34=$$$510,],[$June $15,$Sale,units @ $$39=$$$312,6$ units @ $$64$