As of December 31, 20XX, David Corp's accounts payable were $4,000,000. Its accounts receivable were $2,200,000, and its sales for 20XX were $32,000,000. What was its days sales outstanding?

As of December 31, 2015, Michael Corp's current assets were $2,000,000. Its current liabilities were $2,000,000. Its sales for 2015 were $50,000,000. As of December 31, 2016, Michael Corp's current assets were $3,000,000. Its current liabilities were $3,000,000. Its sales for 2016 were $65,000,000. Management has asked you to comment on these numbers.