Ellen and her husband were legally divorced in $2017.$ After the divorce, Ellen retained physical custody of their children. Ellen received the following amounts from her ex$-$husband, on behalf of the children or as ordered by the court through a divorce decree; court$-$ordered child support of $$1,000$ per month. Court$-$ordered alimony of $$500$ per month. How much of this income should be reorted on Ellen's federal return??