On July $10,2020,$ Cheyenne Music sold CDs to retailers on account and recorded sales revenue of $$658,000($cost $$506,660).$ Cheyenne grants the right to return CDs that do not sell in $3$ months following delivery. Past experience indicates that the normal return rate is $15\%.$ By October $11,2020,$ retailers returned CDs to Cheyenne and were granted credit of $$80,000.$

Prepare Cheyenne$$s journal entries to record $($a$)$ the sale on July $10,2020,$ and $($b$)$ $$80,000$ of returns on October $11,2020,$ and on October $31,2020.$ Assume that Cheyenne prepares financial statement on October $31,2020.$

$($To record sales$)$

$($To record cost of goods$)$

$($To record sales returns$)$

$($To record cost of goods returned$)$