When you sell goods or services to a customer and allow it to pay you at a later date , this is known as selling on credit , and creates a liability for the customer to pay your business.

https://www.accountingtools.com/articles/2017...accounting

Accounts receivable days

.. there is not an absolute number of accounts receivable days that is considered to represent excellent or poor accounts receivable management, since the figure varies considerably by industry and the underlying payment terms.

https://www.accountingtools.com/articles/what...-days.html

Carmax A/R 243 days to collect.

#1 Auto

Carmax Inc's ability to collect accounts receivable..in the May 31 2018 quarter, has increased to 243 days, from 242 days, in the Feb 28 2018 quarter.

https://csimarket.com/stocks/singleEfficiencyrt.php?code=KMX

..Currently trading at a $39 million market valuation ONCI has minimal assets on the books and significant rising debt that usually leads to significant dilution.

https://www.microcapdaily.com/the-fabulous-ri...ci/120182/

Onci 21.99M ENTERPRISE VALUE

https://seekingalpha.com/symbol/ONCI/valuation

Onci enterprise value is $21 million before new accounts before Q3. Last year Onci traded at .019 with toxic debt, minimal assets at $39 million. Consider debt is paid, $5.5 assets, all new accounts, today market value is greater and any spike in price raises EV exponentially .

GL