Dish, Inc. is a large multinational company. Several of Dish$$s international customers owed Dish $$898$ million for products delivered during in $2015.$ Collectability of these customers$$ accounts is very unlikely. In consultation with their legal team, in December $2018$ Dish$$s management determined these accounts in default and ultimately uncollectible. No other customers defaulted on their payments in $2018.$

$($in million dollars$)$

Information from the Balance Sheet December $31,2018$ December $31,2019$

Accounts Receivable, net of allowances of $$856$ and $$941($for $2018$ and $2019,$ respectively$)$ $$5,711$ $$6,282$

Information from the Income Statement $20182019$

Sales on Account $$18,941$ $$17,400$

How much did customers owe Dish, Inc at December $31,2018?$