During the year, net sales were $

$1$

$5$

$7$

$,$

$0$

$0$

$0$

; gross profit was $

$6$

$6$

$,$

$0$

$0$

$0$

; net income was $

$2$

$8$

$,$

$0$

$0$

$0$

; income tax expense was $

$6$

$,$

$6$

$0$

$0$

; and selling, general, and administrative expeses were $

$3$

$0$

$,$

$0$

$0$

$0$

$.$

what is cost of goods sold?