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.$)$

$\backslash$table$[[\frac{1}{1},\backslash$table$[[$Beginning$],[$inventory$]],\backslash$table$[[50$ units at $$10$