Given the following data, calculate the cost of goods sold for the $04/15$ sale using the weighted$-$average method for a perpetual inventory system, rounding to the nearest dollar. $($Do not round in the process of your calculations, only round your final answer.$)$

$1/1$ Beginning inventory $50$ units at $$10$ per unit

$3/5$ Purchases $30$ units at $$14$ per unit

$4/15$ Sale $20$ units at $$30$ per unit

$5/30$ Purchases $25$ units at $$15$ per unit

$10/25$ Purchases $20$ units at $$16$ per unit

$11/15$ Sale $60$ units at $$32$ per unit

$12/31$ Ending inventory $45$ units