I don't understand how these things fit when using the cash conversion cycle, if average inventory divided cost of goods sold is the way to find the days why does this question only give the sales amount and not the average inventory? Like I can go and look at the CCC equation but don't know where these other things like gross margin and financing rate fit in.

"DOLLAR BILL'S, a retail store in New York City, buys its inventory on credit. Upon purchase, it is given 30 days in which to pay its suppliers. It sells all of its merchandise on credit. It extends 60 days of credit to its customers. Its inventory turnover rate is 60 days. Situation 1 Using the Cash Conversion Model, measure DOLLAR BILL'S financing cycle in both days and money ($US) using the following assumptions:

Sales of $730,000

Gross Margin of 30%

Financing Rate 61/2%"