in the formula, what does "day" stand for? "821,917/ day x 19"

Sales this year = $300 million DSO = 19 Sales next year = $320 million - DSO improves to 15 What are receivables next year? = . This year average AR Sales $300 mil/365 days = $821,917/day x 19 = $15.616 million average AR this year Next year average AR Sales $320 mil/365 days = $876,712/day x 15 1 = $13.151 million average AR next year This Year AR Next Year AR Increase in Cash for CFFO Due to AR Decrease $2.465 $15.616 mil $13.151 mil 21