Accounting help. This data base has been given to me$.$ I just need the steps to calculate the final answers $($dont know where to start$).$

$1.$ Compare by location $($e$.$g$,1$vs $2)$ and identify which location has the highest AR as a percentage of sales, and which has the lowest.

$2.$ Which locatin has the highest accounts receivable turnover, and which has the lowest?

$3.$ Which location hws the shortest or longest collection period?