Pet Treats Inc. specializes in gourmet pet treats and receives all income from sales

$>$ Sales estimates $($in millions$)$

$Q1=500$;$Q2=600$;$Q3=650$;$Q4=800$; Q$1$ next year $=550$

$>$ Accounts receivable

Beginning receivables $=$$$250$

Average collection period $=30$ days

So the question $,$ how I get the information provided in the picture $?2/3$ and $1/3$ from the point of the question $!!$